# Inline Fiberglass > Fiberglass Windows and Doors > Generated by All in One SEO Pro v5.0.3, this is an llms-full.txt file, used by LLMs to index the site. ## Posts ### [Black Fiberglass Windows: Design, Heat and Finish Considerations](https://inlinefiberglass.com/black-fiberglass-windows-design-heat-and-finish-considerations/) **Published:** September 30, 2026 **Author:** anthony@webhaven.ca **Excerpt:** Considering black fiberglass windows? Compare design, heat exposure and finish considerations before choosing a dark frame for your project. **Content:** # Black Fiberglass Windows: Design, Heat and Finish Considerations ![Portrait of a man in a blue button-down shirt with a company logo on the chest, seated with arms resting on a table.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Author-Thomas-Hong-683x1024.jpg "Author-Thomas-Hong - Inline Fiberglass - Inline Fiberglass") [Author: Thomas Hong](https://inlinefiberglass.com/resources/blog/thomas-hong/) Considering black fiberglass windows? Compare design, heat exposure and finish considerations before choosing a dark frame for your project. [ Read More ](#article) Black and other dark exterior finishes have become one of the most requested colour options for fiberglass windows, particularly on contemporary builds and renovations that pair dark siding, black hardware or minimal trim with a simpler window line. Choosing black isn’t only a colour decision. Frame colour changes how a window reads against the rest of the elevation, how the frame handles direct sun, and what finish and warranty terms apply. This guide covers the design, heat and finish questions worth resolving before specifying black fiberglass windows for a project. ## Why black window frames are a popular design choice Black exterior frames create a clear line between the window and the surrounding wall, which is why they show up often on projects with light-coloured siding, brick or stucco. The contrast puts more visual weight on the shape and proportion of each opening. On darker exteriors, black frames tend to work the opposite way. They blend into black or charcoal siding and metal panels, which lowers the visual weight of each window and lets the roofline and massing read as one continuous surface. Black frames also get specified alongside other black exterior elements: roofing, eavestroughs, railings and entry doors. Planning window colour and door colour together, rather than separately, tends to produce a more consistent result. Several [residential projects](https://inlinefiberglass.com/projects/residential/) use this kind of coordinated black exterior palette. Traditional and heritage-style projects use black more selectively; often on specific window types, or as an accent against painted or wood-tone trim rather than across the full elevation. ![Poster-style infographic about black fiberglass windows: four sections on design, thermal performance, durability, and pre-specification checks.](https://inlinefiberglass.com/wp-content/uploads/2026/09/Black-Fiberglass-Windows-desktop-web-1024x572.jpg "Black-Fiberglass-Windows---desktop-web - Inline Fiberglass - Inline Fiberglass") ![Infographic outlining design and performance considerations for black fiberglass windows, including contrast, finishes, thermal performance, and ordering checks.](https://inlinefiberglass.com/wp-content/uploads/2026/09/Black-Fiberglass-Windows-mobile-web-529x1024.jpg "Black-Fiberglass-Windows-mobile-web - Inline Fiberglass - Inline Fiberglass") ## Design considerations for black frames ### Decide whether the frame should blend or contrast A black frame against light siding, brick or stucco creates strong contrast and puts emphasis on the shape and proportion of each window. A black frame against dark siding, black metal panels or charcoal masonry blends into the surrounding material and creates a quieter, more continuous exterior. Neither approach is inherently better. The right choice depends on whether the windows are meant to stand out as a design feature or recede into the wall. ### Check it against the whole elevation, not just a swatch Black reads differently in a small paint sample than it does across a full window wall. Before finalizing the colour, check it against: - Siding or cladding material - Brick, stone or stucco - Roofing - Soffits, fascia and eavestroughs - Entry doors and garage doors - Railings and exterior metal A colour that looks right beside a single material can read differently once the full façade is in view. ### Match the finish to the architectural style Contemporary and modern designs tend to use black more heavily, often across most or all of the window openings, to reinforce clean lines and simple geometry. Traditional and heritage-style designs tend to use it more selectively, on specific window types or as a contrast to painted or wood-tone trim. For guidance on weighing frame colour alongside other specification decisions such as glazing, performance and hardware, see [How to Specify Fiberglass Windows and Doors.](https://inlinefiberglass.com/how-to-specify-fiberglass-windows-and-doors/) ### Match the finish to the architectural style Darker exterior colours absorb more solar heat than lighter ones. That’s true of any building material, and window frames are no exception. On black or dark bronze frames, surface temperatures on a sun-exposed south- or west-facing elevation can run noticeably higher than the surrounding air temperature. For fiberglass, this matters less than it does for some other frame materials. Fiberglass has a lower rate of thermal expansion than vinyl, so it tends to handle temperature swings without the warping or bowing that can show up on dark vinyl frames in direct sun. That’s a property of the base material rather than a guarantee tied to any specific colour or coating, and it doesn’t remove the need to plan for exposure. Before specifying black frames for a sun-exposed elevation, it’s worth reviewing with the Inline team: - Which elevations of the project receive direct afternoon sun - Whether the specified product and glazing package have any exposure guidance for dark colours - The local climate and typical summer conditions at the project site These are project-specific questions. The right answer depends on the building’s orientation, glazing and product line, not on frame colour alone. ## Finish and coating durability Exterior finishes, including black and other dark colours, are applied as part of the manufacturing process rather than added on site. How that finish performs over time, and what’s covered under warranty, depends on the specific coating system used for the product and colour selected. Dark colours can show fading, chalking or wear differently than lighter colours over the life of a building, simply because more solar energy reaches the surface. That doesn’t mean a black frame won’t hold up over time. It means the specific finish and its expected performance should be confirmed for the product being specified rather than assumed. Avoid treating any frame colour, dark or light, as immune to wear. Confirm the coating system, expected finish life and any colour-specific warranty terms with the Inline team before finalizing a black or dark finish for a project. [Custom colours and split finishes](https://inlinefiberglass.com/custom-colours-and-split-finishes-for-fiberglass-windows/) covers related finish and warranty questions in more depth. ## What to confirm before choosing black fiberglass windows Before finalizing a black or dark finish, confirm: - Which product series and window styles are available in black for the project - The specific coating system used for the black finish - Any finish-specific warranty terms that apply - Exposure guidance for the project's sun-exposed elevations - Lead time for the selected colour compared to standard finishes - Whether a physical sample or finished unit can be reviewed before ordering - Whether black can be paired with a different interior colour through a split finish, if the interior calls for a lighter tone These details should be confirmed for the specific project and product through Inline’s [custom fiberglass window](https://inlinefiberglass.com/services/custom-fiberglass-windows/) process, rather than assumed from a previous job or another manufacturer’s specification. ## Common Questions About Black Fiberglass Windows Find clear answers to common questions about black fiberglass window durability, custom grid styles, and selecting the right finish for your home. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Do black window frames get hotter than lighter-coloured frames? Yes. Darker colours absorb more solar heat than lighter ones, so black frames typically run warmer on sun-exposed elevations. How much this affects the window depends on orientation, climate and the specific product and glazing package, which should be reviewed for the project. Does a black or dark finish affect the window warranty? Warranty terms should be confirmed for the specific finish and product before ordering. Ask the Inline team about any colour-specific conditions that apply. Are all Inline Fiberglass products available in black? Availability depends on the product line and window style. Confirm which series and configurations are offered in black for the specific project during the quoting process. Do dark frames fade faster than light-coloured frames? Finish performance depends on the coating system used, not just the colour. Confirm expected finish life and maintenance for the specific product before specifying. Can I see a black frame in person before ordering? If a sample or finished unit is available for the product being considered, review it in person and, where possible, under the lighting conditions of the actual project site. A showroom visit can make this comparison easier. Can the frame be black outside and a different colour inside? That configuration is generally available as a split finish, subject to confirmation for the specific window system. See [Custom Colours and Split Finishes](https://inlinefiberglass.com/custom-colours-and-split-finishes-for-fiberglass-windows/) for more on how that works. ## Considering a Black Finish for an Upcoming Project? Review the available colour options, then connect with the Inline team to confirm coating, warranty and exposure details for the specific product in mind. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) **Categories:** Articles --- ### [SDL vs Grilles Between Glass: Choosing the Right Window Detail](https://inlinefiberglass.com/sdl-vs-grilles-between-glass-choosing-the-right-window-detail/) **Published:** August 18, 2026 **Author:** Thomas Hong **Excerpt:** Compare SDL vs grilles between glass for appearance, cleaning and design. See which divided-lite window detail may be right for your project. **Content:** # SDL vs Grilles Between Glass: Choosing the Right Window Detail ![Portrait of a man in a blue button-down shirt with a company logo on the chest, seated with arms resting on a table.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Author-Thomas-Hong-683x1024.jpg "Author-Thomas-Hong - Inline Fiberglass - Inline Fiberglass") [Author: Thomas Hong](https://inlinefiberglass.com/resources/blog/thomas-hong/) Compare SDL vs grilles between glass for appearance, cleaning and design. See which divided-lite window detail may be right for your project. [ Read More ](#article) When choosing fiberglass windows, some of the most noticeable design decisions come down to relatively small details. Window grilles are a good example. Both simulated divided lites (SDLs) and grilles between glass can create the appearance of multiple smaller panes within a larger window. But they create that look in different ways, and the difference becomes noticeable when you consider architectural style, visual depth, cleaning and the overall character of the window. If you are comparing SDL vs grilles between glass, the right choice is usually less about one option being universally better and more about the look and level of detailing you want for the project. ## What Are Simulated Divided Lites? Simulated divided lites, commonly called SDLs, are decorative bars applied to the surfaces of the glass to recreate the appearance of a traditionally divided window. Inline Fiberglass SDLs use non-removable bars bonded to the interior and exterior faces of the glass. The window therefore maintains a continuous insulating glass unit while the applied bars create visible divisions across the glass. Because the SDL bars sit on the surface, they add physical depth to the window. Light can create shadows along the bars, making the divided pattern more noticeable from both inside and outside the building. This dimensional appearance can work especially well when the window design is intended to complement: - Traditional or heritage-inspired architecture - Custom homes where exterior detailing is important - Renovations where new windows need to coordinate with an established architectural style - Projects where the divided-lite pattern is intended to become a noticeable design feature SDL layouts can also be used to create more contemporary geometric effects. The final appearance depends on the proportion, placement, colour and profile of the bars. ## What Are Grilles Between Glass? Grilles between glass, often shortened to GBG, place the decorative grille within the insulating glass unit rather than on the exposed glass surfaces. The grille can still visually divide the window into smaller sections, but the interior and exterior glass surfaces remain smooth. That difference creates two practical effects. First, grilles between glass tend to have a flatter, more subtle appearance than surface-applied SDL bars because the decorative elements sit behind the glass rather than projecting from it. Second, the uninterrupted glass surfaces can be easier to clean because there are no exterior or interior bars to work around during normal window cleaning. Inline Fiberglass can supply grille options in addition to SDLs. Exact grille styles, profiles and compatibility should be confirmed for the specific window series and project configuration. ![Informational infographic titled 'SDL vs Grilles Between Glass: Choosing the Right Window Detail' showing a red left panel about simulated divided lites (SDLs) with a cross‑section window, a blue right panel about grilles between glass (GBGs) with cross‑section, a central quick‑comparison table, and bottom sections on ideal scenarios and critical design factors.](https://inlinefiberglass.com/wp-content/uploads/2026/08/SDL-vs-Grilles-web-Infographic-01-1024x637.jpg "SDL-vs-Grilles---web---Infographic-01 - Inline Fiberglass - Inline Fiberglass") ![Infographic comparing SDLs vs GBGs for window details with labeled sections and a quick comparison board.](https://inlinefiberglass.com/wp-content/uploads/2026/08/SDL-vs-Grilles-Mobile-Infographic-01-529x1024.jpg "SDL-vs-Grilles---Mobile---Infographic-01 - Inline Fiberglass - Inline Fiberglass") ## SDL vs Grilles Between Glass: Quick Comparison | Consideration | Simulated Divided Lites (SDLs) | Grilles Between Glass | |---|---|---| | **Bar location** | Applied to the interior and exterior faces of the glass | Positioned inside the insulating glass unit | | **Appearance** | More dimensional and prominent | Flatter and more understated | | **Visual depth** | Creates more noticeable depth and shadow lines | Pattern appears behind the glass | | **Cleaning** | Glass must be cleaned around the surface bars | Interior and exterior glass surfaces remain smooth | | **Architectural character** | Often suited to projects where divided-lite detailing is an important design feature | Often suited to projects where a grille pattern is wanted with a simpler glass surface | | **Maintenance consideration** | Surface bars become part of normal glass-cleaning areas | Grilles are protected inside the glass unit | | **Product selection** | Profile and series compatibility should be confirmed | Profile and series compatibility should be confirmed | Neither approach should be selected from a sample alone. The same grille pattern can look very different depending on the size and proportion of the window, the width of the bars, the frame colour and the surrounding architecture. ## Choose SDLs When Architectural Depth Matters SDLs are often the stronger choice when the divided-lite effect is intended to be a visible architectural detail. Because the bars sit on the glass surface, they create a stronger sense of depth. From the exterior, this can make the window feel more consistent with architecture where traditional muntins or divided panes would historically have been used. That does not mean SDLs are limited to traditional homes. A carefully proportioned grid can also work in contemporary designs where strong geometric lines are part of the elevation. Consider SDLs when your priorities include: **A more dimensional appearance.** The raised profiles create shadows and visual depth that cannot be produced in quite the same way by a grille positioned behind the glass. **Exterior architectural character.** When the window pattern is an important part of the building elevation, SDL bars can give the grille treatment greater presence. **A divided-lite appearance without physically separating the insulating glass into multiple individual panes.** The SDL treatment creates the visual effect while retaining a continuous insulating glass unit. For projects where these details matter, it is worth reviewing actual profile samples or close-up photographs rather than choosing from a small elevation drawing. ## Choose Grilles Between Glass When Simplicity Matters Grilles between glass may be the better fit when you want the visual rhythm of a divided window without surface-mounted bars. The smooth glass surfaces make them particularly practical for homeowners who prioritize straightforward cleaning. They can also create a lighter visual effect. Because the grille sits inside the glass unit, it does not project forward or create the same depth as an SDL. Consider grilles between glass when your priorities include: **Smooth glass surfaces.** There are no grille bars on the exposed interior or exterior glass to clean around. **A quieter divided-lite appearance.** The grille pattern remains visible while typically appearing less dimensional than an SDL treatment. **Practical everyday upkeep.** For windows that require frequent cleaning or are located in areas where simplified maintenance matters, the smooth surface can be appealing. The trade-off is primarily aesthetic. If the goal is to create strong architectural depth, the flatter appearance may not produce the same effect as an exterior and interior SDL treatment. ## Think About the Whole Window, Not Just the Grille One of the easiest mistakes during window selection is choosing a grille style separately from everything around it. The divided-lite pattern should work with the window size, frame proportions, operating style, colour and architecture of the building. A pattern that looks appropriate on a smaller casement window may feel too busy across a large fixed opening. Conversely, a grille that looks subtle in a catalogue may become a major visual feature when repeated across an entire elevation. Before making a decision, look at several factors together. #### Window Size and Proportion More divisions create more visual lines across the glass. On larger windows, that may help establish scale and architectural rhythm. On smaller openings, too many divisions can compete with the view. #### Exterior Architecture The grille layout should support the design language of the building. A renovation may call for a pattern that respects existing architectural details. A modern project may use fewer, stronger divisions or eliminate them from selected openings altogether. #### Interior Design Remember that the grille is visible from inside as well. Consider how it interacts with interior sightlines, furniture, views and natural light rather than evaluating the exterior elevation alone. #### Frame and Bar Colour Colour can make the grille either stand out or become more integrated with the frame. Inline Fiberglass supports a broader selection of window colours and finishes, so the grille decision should be considered alongside the overall window finish rather than as an isolated accessory. Explore the full range of [glass, colours, grilles and hardware options](https://inlinefiberglass.com/products/fiberglass-windows/options/window-grilles-and-sdl-bars/) when developing the window package. ## Do SDLs Affect Window Energy Performance? An SDL should not be confused with a true divided-lite window made from many independently glazed sections. Inline’s SDL configuration uses bars applied to the surfaces of a continuous insulating glass unit. The decorative pattern therefore does not require the glass to be physically separated into a series of individual glazed openings. However, the overall energy performance of a window should never be judged from the grille style alone. Whole-window performance can depend on the fiberglass frame, insulating glass configuration, Low-E coatings, gas fills, spacer system, seals, operating style and other product-specific details. If energy performance is an important part of the project, review the applicable product data for the complete window configuration rather than assuming that one grille style is inherently more efficient than another. ## What About Maintenance? The most noticeable maintenance difference between SDLs and grilles between glass is access to the glass surface. With SDLs, the bars are bonded to the glass, so normal cleaning involves working around the grille profiles. With grilles between glass, the grille remains inside the insulating glass unit, leaving the exposed glass surfaces smooth. For many homeowners, that makes grilles between glass attractive from a cleaning standpoint. For others, the added visual depth of SDLs is worth the additional detailing on the glass surface. The decision comes back to priorities: architectural depth versus a smoother, simpler glass surface. ## Which Window Grille Option Is Right for Your Project? Choose SDLs when the divided-lite pattern is an important part of the architecture and you want the bars to have physical depth and a more pronounced presence. Choose grilles between glass when you want a divided-window appearance while keeping the interior and exterior glass surfaces smooth. For many custom projects, the most useful next step is not simply choosing “SDL” or “grille.” It is comparing the actual profiles, colours and layouts against the windows being specified. Inline Fiberglass offers a range of customization options, but availability can vary by window series and configuration. If you are planning a custom home, renovation or architectural project, confirm the specific grille or SDL profile with the Inline team before finalizing the design. You can also explore [**custom fiberglass windows**](https://inlinefiberglass.com/services/custom-fiberglass-windows/) or review [**residential projects**](https://inlinefiberglass.com/projects/residential/) to see how window detailing works within complete building designs. ## Common Questions About Choosing the Right Window Detail Find clear answers to common questions about SDL vs Grilles between glass and choosing the right window detail right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What does SDL mean on a window? SDL stands for simulated divided lite. It creates the appearance of multiple divided panes without requiring the insulating glass unit itself to be separated into individual glazed sections. Are Inline Fiberglass SDL bars removable? Inline Fiberglass describes its SDL bars as non-removable. They are bonded to the interior and exterior faces of the glass as part of the finished window detail. Are grilles between glass easier to clean? Generally, yes. Because the decorative grille sits inside the insulating glass unit, the exposed interior and exterior glass surfaces remain smooth and can be cleaned without working around surface-mounted bars. Do SDLs look more traditional than grilles between glass? SDLs typically create more physical depth and shadow because the bars are mounted to the glass surfaces. That can make them well suited to traditional or heritage-inspired designs, although SDL patterns can also be used in modern architecture. Can every Inline window use the same SDL or grille profile? Do not assume that every profile is available with every product. Grille styles, SDL profiles and compatibility can vary by window series and configuration. Confirm the final combination with Inline Fiberglass during product selection. Are SDLs separate pieces of glass? No. Simulated divided lites are designed to reproduce the appearance of divided panes while retaining a continuous insulating glass unit. ## Explore Your Window Design Options The right grille detail should support the architecture of the entire project. Whether you prefer the dimensional character of simulated divided lites or the smooth glass surfaces of grilles between glass, Inline Fiberglass can help you compare the available options for your window configuration. [ Explore Window Options ](https://inlinefiberglass.com/products/fiberglass-windows/) **Categories:** Articles --- ### [Custom Colours and Split Finishes for Fiberglass Windows](https://inlinefiberglass.com/custom-colours-and-split-finishes-for-fiberglass-windows/) **Published:** August 18, 2026 **Author:** Thomas Hong **Excerpt:** This guide explains how custom colours and split finishes can be used, what design decisions to consider, and what to confirm before finalizing your Inline Fiberglass window selection. **Content:** # Custom Colours and Split Finishes for Fiberglass Windows ![Portrait of a man in a blue button-down shirt with a company logo on the chest, seated with arms resting on a table.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Author-Thomas-Hong-683x1024.jpg "Author-Thomas-Hong - Inline Fiberglass - Inline Fiberglass") [Author: Thomas Hong](https://inlinefiberglass.com/resources/blog/thomas-hong/) This guide explains how custom colours and split finishes can be used, what design decisions to consider, and what to confirm before finalizing your Inline Fiberglass window selection. [ Read More ](#article) Windows play a major role in how a home or building looks from both the outside and the inside. Frame colour can help windows blend into an exterior façade, create contrast against cladding, complement architectural details, or become a design feature in their own right. For projects where standard finishes do not provide the right look, custom window colours and split-finish configurations can provide another level of design flexibility. The key is to choose the finish as part of the overall window specification—not as an afterthought. This guide explains how custom colours and split finishes can be used, what design decisions to consider, and what to confirm before finalizing your Inline Fiberglass window selection. ## What Are Custom Window Colours? A custom window colour is a finish selected to meet a particular architectural or interior design direction rather than simply accepting a default frame colour. Custom exterior window colours can be useful when a project calls for coordination with elements such as: - Exterior cladding or siding - Brick, stone or masonry - Roofing and metalwork - Soffits, fascia and trim - Entrance doors - Interior cabinetry or millwork - Flooring and wall finishes - Other window and door systems The objective does not always have to be a perfect colour match. In many projects, a complementary or intentionally contrasting colour creates a stronger result. If colour is an important part of the project, discuss it early in the selection process. Availability can depend on the product and project requirements, so the appropriate finish should be confirmed before specifications and other design decisions are finalized. Explore Inline’s broader [Glass, Colours, Grilles & Hardware Options](https://inlinefiberglass.com/products/fiberglass-windows/options/) when planning the complete window appearance. ![Infographic outlining custom colour options and split finishes for fiberglass windows, with sections on design, finishes, and planning.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Custom-color-desktop-infographic-01-1024x637.jpg "Custom-color---desktop---infographic-01 - Inline Fiberglass - Inline Fiberglass") ![Infographic about custom colors and split finishes for fiberglass windows, outlining design options, finishes, and planning steps for exteriors and interiors.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Custom-color-mobile-infographic-01-529x1024.jpg "Custom-color---mobile---infographic-01 - Inline Fiberglass - Inline Fiberglass") ## What Is a Split Finish Window? A split finish generally refers to a window designed with one colour or finish on the exterior and another on the interior. For example, a project might call for a dark exterior window frame to complement contemporary cladding while using a lighter, more neutral appearance inside. This approach allows the same window to respond to two different design environments. ### Exterior Design The exterior colour needs to work with the architecture of the building as a whole. Depending on the design, the goal may be to: - Blend the window frame into dark siding - Create contrast against light masonry - Coordinate windows with an entrance door - Reinforce a traditional architectural palette - Give a modern elevation a more consistent appearance ### Interior Design Inside the building, priorities may be very different. The frame may need to coordinate with: - White or neutral walls - Natural wood finishes - Cabinetry - Interior trim - Contemporary dark accents - A warmer or lighter room palette A split finish allows these two sides of the design to be considered independently when the selected product configuration supports it. ## When Does a Split Finish Make Sense? Split finishes are worth considering when the colour that works best outside would not be the preferred choice inside. A few common design situations illustrate the advantage. #### Dark exterior, light interior Dark exterior window frames are often used to add definition to a façade. That same dark finish may feel too dominant in an interior designed around light walls and trim. A split finish can preserve the exterior effect while giving the room a different visual character. #### Traditional exterior, contemporary interior Renovations sometimes need to respect an established exterior design while the interior is being modernized. Treating the inside and outside separately can help bridge those two design directions. #### Multiple interior palettes A larger home or commercial project may use different materials and colours throughout the interior. In these situations, the exterior may need to remain consistent across the building while interior window details are evaluated against the spaces they occupy. #### Coordinating windows and doors Window colour should also be considered alongside entrance doors and other major openings. If the project uses both windows and a prominent front entrance, viewing the products as one exterior design system can create a more intentional result. Explore the [4500 Series Fiberglass Entrance Doors](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) when coordinating window and entrance-door design. ## Choosing the Right Exterior Window Colour Exterior window colours tend to have a larger visual impact than they appear to on a small swatch. Before selecting a colour, consider the entire elevation. ### 1. Decide whether the windows should blend or contrast A window frame that closely relates to the surrounding material can create a quieter appearance. A contrasting frame does the opposite. It emphasizes the geometry of each opening and can make windows an important architectural feature. Neither approach is inherently better. The right decision depends on what the windows are supposed to contribute to the design. ## 2. Look beyond the siding colour Windows interact with several materials at once. Evaluate the proposed finish against: Brick or stone, Exterior trim, Roofing, Metal flashing, Railings, Doors, Garage doors, Soffits and fascia. A colour that works beside one material may read differently when the entire façade is considered. ## 3. Consider the architectural style A contemporary building may use strong contrast and dark frame colours to emphasize clean openings and simple geometry. A traditional design may use a different approach, such as integrating the windows more closely with trim, masonry or other established details. The window colour should reinforce the architecture rather than follow a trend independently of it. ## Choosing the Right Interior Finish The inside of the window becomes part of the room. Before carrying an exterior colour through to the interior, consider how it will interact with the space over the long term. ### Think about permanent finishes first Paint colours are relatively easy to change. Flooring, cabinetry, built-ins and major millwork are not. When choosing an interior window finish, give greater weight to the permanent elements of the room. ### Consider how much visual emphasis you want A contrasting frame draws attention to the window opening and the view beyond it. A quieter finish can allow furnishings, architectural details or the outdoor view to carry more of the visual weight. ### Look at more than one room For projects using a consistent window system throughout the building, consider whether the selected interior finish works across bedrooms, kitchens, living spaces and other areas—not just in the room used for initial design decisions. ## Custom Colour or Standard Colour? A custom colour can be valuable when the window needs to satisfy a precise design requirement, but that does not mean every project needs one. A standard finish may be the stronger choice when it already coordinates successfully with the rest of the project. Consider moving to a custom colour when: - A specific architectural palette must be followed - Windows need to coordinate closely with another major building element - A standard option creates an unwanted contrast - Exterior appearance is a major part of the design concept - The project requires a more tailored visual result The decision should be driven by the architecture rather than customization for its own sake. For projects that involve broader changes to size, configuration, glazing or finishes, review Inline’s Custom Fiberglass Windows options as part of the planning process. ## Plan Window Colour Early in the Project Colour decisions can affect more than the appearance of an individual window. Architects, designers and homeowners may need to coordinate the final window selection with drawings, exterior materials, trim details and door selections. Making the colour decision early gives the project team more opportunity to evaluate everything together. Before finalizing a custom colour or split finish, confirm: - Which colours are currently available for the selected product - Whether the requested window supports a split finish - How custom colour requests are reviewed - Whether a physical or representative sample can be provided - Whether the finish affects project lead time - Whether any finish-specific warranty terms apply - Whether the selected colour can be coordinated with other Inline products in the project These details should be confirmed for the specific product and project rather than assumed from another window or door configuration. ## Use Samples and Real Materials Whenever Possible Colours viewed on a computer monitor are not always reliable representations of a finished product. If finish samples are available for the product being considered, compare them with the actual project materials whenever possible. Review the colour beside: Brick or masonry samples, Siding, Roofing, Exterior metal, Interior paint, Cabinetry, Flooring Door finishes. It is also useful to view the materials under different lighting conditions. A finish can look different outdoors, indoors, in direct sun and in shade. For design-driven projects, a showroom visit can make these decisions easier by allowing several window and door details to be considered together. [ Book a Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) ## Custom Colour Is Only One Part of the Window Design Colour is important, but it should be selected as part of the full window package. Depending on the project, the overall appearance may also be influenced by: Window style and operating type, Glass selection, Grilles or SDL details, Hardware, Exterior trim, Interior casing, Window proportions, Adjacent entrance doors. Reviewing these elements together helps prevent individual selections from competing with one another. [The Glass, Colours, Grilles & Hardware Options](https://inlinefiberglass.com/products/fiberglass-windows/options/) page is the best starting point for exploring how these design choices work together. ## Common Questions About Custom Window Colours Find clear answers to common questions about Inline fiberglass windows custom window colours, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Can I choose any colour for my fiberglass windows? Colour availability should be confirmed for the specific Inline product and project. If you have a particular colour in mind, provide the reference during the design or quoting process so the team can advise on available options. Can the interior and exterior of a window be different colours? That type of configuration is generally known as a split finish. Availability should be confirmed for the selected Inline window system before the design is finalized. What are colour-matched fiberglass windows? Colour matching refers to selecting or developing a window finish intended to coordinate with another project colour or material. The exact colour-matching options and process should be reviewed with Inline for the specific project. Can a custom colour affect lead time? Custom finishes can involve additional project requirements. Confirm any scheduling implications during the quoting process rather than assuming the timing will be the same as another finish. Does a custom or dark finish change the warranty? Warranty treatment should be confirmed for the specific finish and product before ordering. Review current warranty information and ask the Inline team about any finish-specific conditions that apply. Should I choose my window colour before selecting other exterior materials? Ideally, these decisions should be made together. Windows, doors, cladding, masonry, roofing and trim all contribute to the finished elevation. Can my windows and entrance door use coordinated colours? Windows and doors can be planned as part of the same exterior colour strategy. Exact finish availability and coordination should be confirmed for the specific window and door products selected. ## Plan Your Window Finish With the Full Project in Mind Have a colour direction or split-finish concept in mind? Request a Design Consultation to review your project, explore the appropriate Inline Fiberglass options and confirm the finishes available for your selected products. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) **Categories:** Articles --- ### [How to Specify Fiberglass Windows and Doors](https://inlinefiberglass.com/how-to-specify-fiberglass-windows-and-doors/) **Published:** August 18, 2026 **Author:** Thomas Hong **Excerpt:** A practical guide for architects and specifiers covering fiberglass window and door selection, performance, glazing, finishes, certifications, technical documents and project coordination. **Content:** # How to Specify Fiberglass Windows and Doors ![Portrait of a man in a blue button-down shirt with a company logo on the chest, seated with arms resting on a table.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Author-Thomas-Hong-683x1024.jpg "Author-Thomas-Hong - Inline Fiberglass - Inline Fiberglass") [Author: Thomas Hong](https://inlinefiberglass.com/resources/blog/thomas-hong/) A practical guide for architects and specifiers covering fiberglass window and door selection, performance, glazing, finishes, certifications, technical documents and project coordination. [ Read More ](#article) Windows play a major role in how a home or building looks from both the outside and the inside. Frame colour can help windows blend into an exterior façade, create contrast against cladding, complement architectural details, or become a design feature in their own right. For projects where standard finishes do not provide the right look, custom window colours and split-finish configurations can provide another level of design flexibility. The key is to choose the finish as part of the overall window specification—not as an afterthought. This guide explains how custom colours and split finishes can be used, what design decisions to consider, and what to confirm before finalizing your Inline Fiberglass window selection. ## Fiberglass Window Specification Workflow at a Glance Project Requirements → Operation & Product Family → Performance Criteria → Glazing → Size & Configuration → Finishes & Hardware → Technical Documentation → Project Review → Final Specification ### 1. Define the Project Requirements First Before selecting a fiberglass window or door system, establish the conditions the product needs to satisfy. At minimum, review: - Building and project type - New construction, renovation or retrofit - Required window or door operation - Opening dimensions and configurations - Energy and envelope-performance objectives - Glazing requirements - Interior and exterior design requirements - Finish and colour requirements - Hardware and accessory requirements - Applicable certification or documentation requirements - Installation and building-envelope coordination - Submittal and approval requirements A residential project, commercial building and high-performance project may all use fiberglass fenestration, but they may require very different combinations of operation, glazing, technical documentation and performance. The specification should reflect those differences. Explore resources for **Architects & Specifiers** ## 2. Select the Required Window or Door Operation The next step is to determine how each opening needs to function. Inline Fiberglass offers several window and door product families with different operating configurations. | Required Operation or Product Type | Inline Product Family to Review | |---|---| | Tilt & turn or fixed window | **300 Series** | | Casement, awning or fixed window | **325 Series** | | Strip or fixed window | **400 Series** | | In-swing casement, hopper or fixed window | **700 Series** | | Horizontal slider | **800 Series** | | Single hung window | **850 Series** | | Double hung window | **900 Series** | | Fiberglass entrance door | **4500 Series** | | Fiberglass sliding patio door | **600 Series** | This is only the first level of product selection. Exact dimensions, glazing configurations, performance data, hardware and certification applicability should be confirmed using the current technical information for the selected series. A specification guide should not replace the individual product pages or technical documents. Those sources should remain the reference point for product-specific requirements. ## 3. Establish Whole-Assembly Performance Criteria Once the operating type has been identified, establish the performance requirements for the complete window or door assembly. Depending on the project, relevant criteria may include: - Whole-product U-value - Solar Heat Gain Coefficient (SHGC) - Visible Transmittance - Air-infiltration performance - Water-penetration performance - Structural or design-pressure requirements - High-performance or Passive House objectives - Applicable product testing or certification requirements One important distinction is the difference between glass performance and whole-window performance. A high-performing insulating glass unit does not determine the performance of the complete window by itself. Frame design, glazing, spacer systems, seals, operating hardware, product dimensions and other assembly characteristics can all affect overall performance. For that reason, project specifications should rely on current whole-product data wherever the requirement applies to the complete fenestration assembly. ### Do not transfer performance values between configurations. Performance data should be associated with the product and configuration represented by the supporting documentation. Do not assume that a rating for one series, size, glazing package or operating configuration automatically applies to another. Where a project has a specific performance target, confirm the applicable configuration before the specification is finalized. [Review current **Certifications & Testing information**](https://inlinefiberglass.com/about/certifications-testing/) ## 4. Coordinate the Glazing Specification With the Window System Glazing should be selected as part of the complete fenestration system rather than as a separate decision. Depending on the series and project requirements, the available insulating glass configurations may differ. Consider: - Double- or triple-glazed requirements - Solar Heat Gain Coefficient (SHGC) - Solar heat-gain requirements - Visible-transmittance requirements - Low-E coating requirements - Gas-fill and spacer options where applicable - Glass thickness and overall insulating-glass-unit compatibility with the selected series A common specification mistake is to call for a particular glazing package before confirming that it is appropriate for the selected window or door system. A better approach is to define the required performance outcome, then verify which available product and glazing configuration satisfies it. For high-performance projects, this coordination should happen early enough that the glazing strategy, frame selection and architectural openings can be developed together. ## 5. Confirm Size and Configuration Requirements Early Fiberglass can support a wide range of architectural applications, but allowable dimensions and configurations should always be reviewed at the series level. Do not assume that every operating style has the same: Maximum dimensions, Aspect-ratio limitations, Glazing capacity, Structural capacity, Hardware requirements, Fixed-versus-operable configuration options. This becomes especially important with custom or oversized openings. Where larger openings or unusual configurations are part of the design, provide project dimensions and drawings early enough for the proposed product to be reviewed before the construction documents are finalized. For doors, also identify the required overall configuration rather than specifying the slab or operating panel in isolation. Entrance-door projects may involve sidelites, transoms and other architectural elements, while sliding-door projects may use multi-panel configurations. The complete opening should be reviewed as a system. ## 6. Define Finishes, Hardware and Accessories The architectural specification should also identify the visible and functional options that need to be coordinated with the selected product. Depending on the product and configuration, these may include: ### Colours and Finishes Define the required interior and exterior appearance and confirm available finishes for the selected system. Where different interior and exterior colours are required, confirm the applicable split-finish options before documenting the final colour schedule. ### Grilles and Simulated Divided Lites If the design calls for grille patterns or simulated divided lites, identify: - Desired visual pattern - Required profile or grille type - Interior and exterior appearance - Compatibility with the selected window configuration These details can have a substantial effect on the final architectural appearance and should not be left as a generic allowance. ### Hardware Specify the operating and visual requirements for window and door hardware, then confirm compatibility with the selected series. Avoid assigning a particular hardware option across multiple product systems without verifying that it is available for each configuration. ### Trim and Accessories Where applicable, coordinate exterior and interior accessories such as brickmoulds, jamb extensions, casing or other interface components with the surrounding wall assembly and finish materials. Treat these elements as part of the fenestration package rather than as an afterthought near installation. ## 7. Verify Certifications and Technical Documents Technical documentation should support the specification rather than simply appear as a collection of logos or generic claims. Depending on the selected product and project requirements, the specification team may need to review: Product drawings, CAD details where available, Product specification information, Performance data, Certification documents, Installation information, Glazing information, Finish and option information, Environmental documentation where applicable. Inline’s Technical Downloads section should be used to review the current documents associated with the relevant product family. [**Access Technical Downloads**](https://inlinefiberglass.com/resources/technical-spec-download/) ### Use product-specific certification language Avoid broad statements such as: **“All fiberglass windows are Passive House certified.”** Certification and testing should instead be associated with the exact product or configuration to which the supporting documentation applies. A stronger specification approach is: **Selected product and configuration to comply with the project performance requirements and applicable current certification documentation.** The exact product, configuration and referenced document can then be identified as the project moves through technical review. This makes the specification easier to verify and reduces the risk of carrying an inapplicable certification from one product into another. ## 8. Coordinate Drawings, Submittals and Installation Requirements The window specification cannot be developed independently from the wall assembly. Before finalizing the package, coordinate the fenestration with: - Architectural opening dimensions - Wall thickness and interface conditions - Interior and exterior finishes - Sill and perimeter conditions - Water-management details - Required fastening or attachment conditions - Field dimensions where applicable - Installation responsibilities - Shop drawings and submittal requirements The project team should also establish who is responsible for confirming field conditions, installation details and final interfaces. Do not assume that manufacturing, supply and installation responsibilities are identical on every project. For custom, commercial or high-performance work, early coordination can help identify questions before they become drawing revisions or site issues. ## 9. Build the Specification Around the Exact Product Configuration Once the technical requirements have been reviewed, the final specification can identify the selected system more precisely. A practical framework is: #### Product - Manufacturer - Product series - Window or door type - Operating configuration #### Performance - Required whole-product thermal performance - SHGC or other solar-performance criteria where applicable - Air, water and structural criteria where required - Applicable certification or testing requirements #### Glazing - Required performance - Double- or triple-glazed configuration where applicable - Coating, gas and spacer requirements as approved for the product #### Appearance - Interior finish - Exterior finish - Grilles or SDLs - Trim and accessory requirements #### Hardware - Operating requirements - Finish requirements - Product-compatible hardware selection #### Documentation - Product data - Drawings - Performance information - Applicable certificates - Installation information #### Submittals - Product data - Shop drawings where required - Finish selections - Glazing information - Requested certification documentation ![Infographic showing the nine-step process to specify fiberglass windows and doors, from defining building goals to building a complete specification.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Specify-fiberglass-desktop-Infographic-01-1024x637.jpg "Specify-fiberglass---desktop---Infographic-01 - Inline Fiberglass - Inline Fiberglass") ![Infographic detailing the 9-step fiberglass window specification workflow for architects and specifiers.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Specify-fiberglass-Mobile-Infographic-01-529x1024.jpg "Specify-fiberglass---Mobile---Infographic-01 - Inline Fiberglass - Inline Fiberglass") ## Fenestration Specification Checklist Before issuing the specification, confirm: - Building and application requirements are defined - Required window and door operations are identified - Appropriate Inline product series have been reviewed - Opening dimensions and configurations are established - Whole-product performance criteria are defined - Glazing requirements are coordinated with the selected series - Interior and exterior finishes are identified - Hardware requirements are identified - Grilles, SDLs and accessories are identified where applicable - Required certification scope is clearly stated - Current product documentation has been reviewed - Large or custom configurations have received project-specific review - Installation and envelope interfaces are coordinated - Required drawings and submittals are identified - Product-specific values have not been copied from an unrelated configuration - Final product data will be reviewed against the project requirements ## CommonFiberglass Window Specification Mistakes #### Selecting a series before defining the requirements Start with the required operation, performance and opening conditions. Then choose the product. #### Specifying only the glass performance Use whole-window or whole-door performance where the requirement applies to the complete assembly. #### Using blanket certification language Certifications should be tied to the applicable product and configuration. #### Assuming every series accepts the same glazing or dimensions Glazing capacity, dimensions and available configurations can vary by product. #### Leaving finishes and hardware until the end Finish, grille, hardware and accessory decisions can affect architectural coordination and should be documented early. #### Using outdated technical information Specifications should reference current product data and current applicable documentation. #### Treating installation as separate from product selection The performance of the specified assembly also depends on proper coordination with the surrounding wall and installation conditions. ## Common Questions About Specifying Fiberglass Windows and Doors Find clear answers to common questions about how to specify fiberglass windows and doors, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What should an architect include when specifying fiberglass windows? At minimum, identify the required product type and operation, dimensions or configuration, whole-product performance criteria, glazing requirements, finishes, hardware, applicable certifications, technical-document requirements and installation or interface conditions. Are all Inline Fiberglass window series certified to the same standards? No blanket certification assumption should be made. Certification and testing applicability should be confirmed for the exact product and configuration being considered. Can fiberglass windows be specified with triple glazing? Triple-glazed configurations are available within Inline’s product offering, but glazing capacity and available packages should be confirmed for the selected series and project configuration. Where can architects find Inline product drawings and technical information? Start with the [Technical Downloads](https://inlinefiberglass.com/resources/technical-spec-download/) section for available product information and use the specifier-support path when additional project-specific documentation is required. When should the manufacturer be involved in the specification process? Earlier coordination is particularly useful when a project involves custom dimensions, large openings, high-performance requirements, unusual configurations or specific certification requirements. Does this guide replace the individual Inline product specifications? No. This guide provides a specification workflow. Product pages, current technical documentation and project-specific review should be used to confirm the final product requirements. ## Need Help Specifying Inline Fiberglass Windows or Doors? Every project has a different combination of operation, performance, glazing, dimensions and architectural requirements. If you are developing a residential, architectural, commercial or high-performance project, Inline Fiberglass can help you review the appropriate product path and supporting technical information. [ Request a Specifier Package ](https://inlinefiberglass.com/architect-specifier-package-request/) **Categories:** Articles --- ## Pages ### [Home](https://inlinefiberglass.com/) **Published:** May 13, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Windows & Doors Engineered in Canada Inline Fiberglass makes premium fiberglass windows, entrance doors, and sliding patio doors for homes, commercial buildings, architectural projects, and high-performance building needs. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ Explore Products ](https://inlinefiberglass.com/products/) ## A focused fiberglass product line for homeowners, architects, builders, developers, and dealers. ## Company Established in 1992 Decades of experience in fiberglass window and door manufacturing. ## Toronto Manufacturing Headquarters Locally based production with hands-on quality control. ## Integrated Fiberglass Manufacturing From pultrusion to painting, design, and final assembly. ## Dealer-supported availability Product access supported through an established dealer network. ## Find the Right Path for Your Project Every project starts in a different place. Choose the path that best fits your needs, and Inline will help you move toward the right fiberglass window or door solution. Homeowners ## Upgrade Your Home with Fiberglass Windows and Doors Improve comfort, curb appeal, and long-term performance with fiberglass windows, entrance doors, and sliding patio doors made for residential projects. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) Architects & Specifiers ## Specify with Clear Product Information Access product details, technical documents, drawings, certification information, and project support for architectural and high-performance building needs. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) For Builders and Contractors ## Build with Reliable Product Solutions Inline helps builders and contractors source fiberglass windows and doors you can rely on, with consistent quality, clear timelines, and support that keeps projects moving. [ Talk to a Product Specialist ](tel:1-866-566-5656) Developers & Commercial Buyers ## Get the Right Product Guidance for Your Project Find fiberglass window and door options for custom homes, renovations, and light commercial projects, with support for product selection and project coordination. [ Request Commercial Support ](https://inlinefiberglass.com/contact/) Dealers & Distributors ## High-Performance Fiberglass for Commercial Builds Explore durable, energy-conscious fiberglass window and door products for commercial, multifamily, and performance-focused building projects. [ Beccome a Dealer ](https://inlinefiberglass.com/dealer-partnership-inquiry/) ## Windows and Doors Should Perform as Well as They Look [ Talk to a Product Specialist ](tel:1-866-566-5656) The right window or door does more than fill an opening. It affects comfort, energy performance, appearance, maintenance, and long-term value. Inline Fiberglass helps customers choose products for projects where performance matters, including home upgrades, custom builds, commercial buildings, and high-performance construction. **For Homeowners** Better comfort, cleaner design, and durable products for everyday. **For architects and Builders** Clear product information and confidence in the right fit. **For commercial teams and dealers** A focused fiberglass line backed by practical product support. [ Talk to a Product Specialist ](tel:1-866-566-5656) ## Explore Fiberglass Windows, Doors, and High-Performance Products Choose the product path that fits your project. Inline offers fiberglass window and door products for residential, commercial, architectural, and dealer-supported applications. ## Fiberglass Windows Explore fiberglass windows for residential, commercial, and high-performance applications, with styles including casement, awning, fixed, slider, hung, strip, and tilt-and-turn. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Fiberglass Entrance Doors Create a stronger first impression with fiberglass entrance doors designed for durability, clean style, and long-term performance. [ Explore Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ## Sliding Patio Doors Connect indoor and outdoor spaces with fiberglass sliding patio doors designed for comfort, performance, and smooth everyday use. [ Explore Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## Passive House & High-Performance Planning a high-performance or Passive House project? Inline can help you review product options, documentation, and certification details by product. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Why Choose Fiberglass? Fiberglass is a strong fit for projects where long-term performance, comfort, and durability matter. It supports stable frames, clean design, energy-conscious product options, and lower-maintenance ownership compared with many traditional window and door materials. ## Built for Strength Fiberglass frames are designed for long-term durability and structural performance across residential and commercial applications. ## Designed for Comfort The right fiberglass window or door system can help support thermal comfort, energy performance, and a more efficient building envelope. ## Stable and Durable Fiberglass is valued for dimensional stability, helping window and door frames perform through changing temperatures and seasons. ## Clean Design Flexibility Choose from product styles, glass options, colours, grille options, and hardware details to fit the design of your home or building. ## Built Around Fiberglass. Not Added On. Inline Fiberglass is focused on fiberglass windows and doors. Fiberglass is not one product category among many. It is the material our product line is built around. That focus helps us provide clearer product guidance, better technical support, and window and door options designed around the strengths of fiberglass. Inline is built around fiberglass. The company controls key parts of the product process, from pultruded fiberglass lineals to architectural coatings and final window and door assembly. That manufacturing focus helps support product consistency, finish quality, technical performance, and clear product guidance for residential, commercial, and high-performance building projects. [ About Inline Fiberglass ](#) ## See Fiberglass Windows and Doors in Real Projects Explore how Inline fiberglass products support residential, commercial, and high-performance building projects. Residential Projects See fiberglass windows and doors used in home upgrades, custom homes, and residential building projects. [ View Residential Projects ](https://inlinefiberglass.com/projects/residential/) Commercial Projects Review project examples for commercial, multifamily, and performance-focused applications. [ View Commercial Projects ](https://inlinefiberglass.com/projects/commercial/) Passive House Explore projects where thermal performance, documentation, and technical confidence matter. [ View Passive House Projects ](https://inlinefiberglass.com/projects/passive-house/) ## A Clear Next Step for Every Project You do not need to know every product detail before reaching out. Tell us about your project, and our team will help you move in the right direction. ## 01 ## Tell Us About Your Project Send a few details about your windows, doors, building type, location, timeline, and product needs. ## 02 ## We Review Your Request Our team reviews your project and recommends the best next step for your needs. ## 03 ## Move Forward with Confidence We help you understand your options so you can move toward the right fiberglass window or door solution. [ Start a Quote Request ](https://inlinefiberglass.com/request-a-quote/) ## Need Product Specs, Drawings, or Certification Details? Inline supports performance-focused projects with product-specific documentation, including NFRC performance data, IGMAC-certified insulating glass units, and select Phius Blue Path certified product configurations. Certification scope varies by product, configuration, and project requirements, so architects, builders, and homeowners should request the right documentation before specifying a product. Certification scope varies by product and configuration. Contact Inline to confirm the right product, certification details, and documentation for your project. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Download Technical Documents ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to a Technical Representative ](tel:1-866-566-5656) ## Visit the Inline Fiberglass Showroom or Find a Dealer Inline manufactures its fiberglass window and door products in Ontario and works with authorized dealers to support regional distribution, localized installation, and code-specific project needs. Contact Inline or use the dealer locator to find the right path for your location and project type. [ Find a Dealer Near You ](https://inlinefiberglass.com/dealers/) [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Ready to Start Your Window or Door Project? Tell us about your project. Our team will review your request and help you take the next step toward the right fiberglass windows, doors, product specs, dealer path, or project support. Contact form general Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town I'm interested in: - Select -QuoteShowroom visitSalesServiceSpecsDealer partnershipGeneral questionOther Project notes I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. ## Common Questions About Inline Fiberglass Windows and Doors Find clear answers to common questions about fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What does Inline Fiberglass make? Inline Fiberglass makes fiberglass windows, fiberglass entrance doors, sliding patio doors, and high-performance product options for residential, commercial, architectural, and dealer-supported projects. Why choose fiberglass windows and doors? Fiberglass is valued for strength, durability, dimensional stability, energy-conscious performance, and clean design flexibility. It is a strong choice for projects where long-term performance matters. Does Inline work with homeowners? Yes. Homeowners can contact Inline to ask about fiberglass windows, entrance doors, sliding patio doors, showroom visits, quote requests, and the best path for their project. Can architects and builders request product specs? Yes. Architects, builders, developers, and specifiers can request product specs, technical documents, drawings, and project support from Inline. Are Inline products Passive House or PHIUS certified? Select Inline product configurations have performance certifications, including Phius Blue Path certified products such as the 400 Series Fixed Window and 600 Series Sliding Door. Certification scope varies by product and configuration. Request product documentation to confirm the right fit for your project. Does Inline install directly? Yes, we offer direct installation services through our own experienced installation team. Our turnkey replacement service includes removing your existing windows and installing new fiberglass windows tailored to your home’s needs, ensuring a seamless process from start to finish. Does Inline offer custom colours? Yes. Inline offers factory-applied architectural coatings, standard colour options, custom colour matching, dark exterior finishes, and split-finish configurations for select products. Final options may vary by product and project requirements. Does Inline provide warranty support? Inline provides limited warranty coverage for its products, including coverage related to pultruded fiberglass components, AAMA-certified finishes, and insulating glass unit seals. Please review the full warranty document for exact terms, conditions, and exclusions. What information is needed for a service request? Service requests should include the project location, original work order details if available, product line, issue type, facility type, window height where relevant, and photos. This helps the service team review the issue before follow-up. How do I get a quote? Use the Request a Quote form and share your project type, location, product needs, and timeline. Inline will review your request and follow up with the next step. How do I become an Inline dealer? Submit a dealer inquiry with your market, business details, and product interest. Inline will review your request and contact you about availability and next steps. ## Start with the Right Fiberglass Window or Door Path Whether you are upgrading a home, planning a commercial project, specifying high-performance products, or exploring dealer opportunities, Inline Fiberglass can help you take the next step. [ Start a Project Today ](#) [ Request a Free Quote ](#) --- ### [Custom Fiberglass Windows for Your Ontario Home](https://inlinefiberglass.com/windows-custom-ga/) **Published:** October 15, 2026 **Author:** anthony@webhaven.ca **Content:** [![Inline Fiberglass](https://inlinefiberglass.com/wp-content/uploads/2026/05/inline-logo-full-dark.png)](https://inlinefiberglass.com/) [↗416-679-1171](tel:+14166791171) [ Get My Free Window Quote ](#quote) Canadian-made windows • Fiberglass specialists since 1992 # Custom Fiberglass Windows for Your Ontario Home Planning replacement windows, a renovation, or a new home? Explore Inline’s fiberglass window styles, custom sizes, colours, and glass options. Tell us about your project to request a free quote. [ Get My Free Window Quote ](#quote) [Speak With a Specialist: **416-679-1171**](tel:+14166791171) ![Inline Fiberglass windows and doors engineered for Canadian buildings.](https://inlinefiberglass.com/wp-content/uploads/2026/05/Fiberglass-Windows-Doors-Engineered-in-Canada-20.jpg "Fiberglass-Windows-Doors-Engineered-in-Canada-20 - Inline Fiberglass - Inline Fiberglass") ## Canadian manufacturing Fiberglass window manufacturing based in Toronto / Etobicoke. ’92 ## Established in 1992 Decades of experience focused on fiberglass. ## Visit the showroom Review window styles, finishes, and product details in person. ## Choose Windows Around the Way You Live Start with the comfort, appearance, and everyday operation you want from your windows. Inline can help you compare the product options that fit your home and project. 01 / ### Comfort through changing seasons Compare window and glass configurations suited to your home’s comfort and energy-performance goals. 02 / ### Durable fiberglass frames Choose a frame material valued for strength, dimensional stability, and long-term performance. 03 / ### A look that fits your home Explore window styles, colours, grilles, and hardware details that work with your design. ## Find Your Window Style ![Inline Fiberglass 300 Series tilt-turn fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/300SERIESOPEN_vector-1920w.webp "300+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ### Tilt & Turn Two opening modes provide options for ventilation and cleaning access. ![Inline Fiberglass 325 Series casement fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESOPEN_vector-1920w.webp "325+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ### Casement & Awning Explore practical operating styles for rooms where ventilation matters. ![Inline Fiberglass 325 Series fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIES_vector1-1920w-fixed.webp "325+SERIES_vector+(1)-1920w - fixed - Inline Fiberglass - Inline Fiberglass") ### Fixed & Picture Windows Consider fixed windows where views and daylight matter more than an opening sash. Need a particular size, colour, or glass package? Inline can review available options for your selected window series. Final sizes and configurations are confirmed during quoting. [Discuss My Window Project↗](#quote) ![Installed Inline Fiberglass 700 Series casement/hopper fiberglass window, view 3.](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-003.jpg "windows-700-series-003 - Inline Fiberglass - Inline Fiberglass") ## Talk to the Team Behind Your Windows Inline manufactures its fiberglass windows in Ontario and offers direct installation through its own installation team. We serve window projects in Toronto, Mississauga, Oakville, and Muskoka. Tell us about your home, window needs, and project timeline to request your free quote. ### See Your Options in Person Compare window styles, frame details, colours, glass, and hardware at Inline’s Etobicoke showroom. **30 Constellation Court** Etobicoke, Toronto, ON M9W 1K1 Appointments are recommended. [Request a Showroom Visit↗](https://inlinefiberglass.com/book-showroom-visit/) ## What Inline Customers Say ←→ ★★★★★Google review excerpt > “The quality of installation and professionalism was top notch. These guys do amazing work.” Michael DeFreitas (Lockwood Kia) [Read on Google ↗](https://www.google.com/maps/contrib/116803114949606668222/reviews?hl=en) ★★★★★Google review excerpt > “Nobody as experienced or knowledgeable than these guys! Great custom solutions as well.” Courtney Lyn [Read on Google ↗](https://www.google.com/maps/contrib/108949032013787300119/reviews?hl=en) ★★★★★Google review excerpt > “Installation was exceptional. The product is outstanding. They showed up on time and the work was flawless.” Lisa Jeremic [Read on Google ↗](https://www.google.com/maps/contrib/113776030338366497918/reviews?hl=en) ★★★★★Google review excerpt > “From the consultation to the final installation, their professionalism, attention to detail, and commitment were clear every step of the way.” John Baker [Read on Google ↗](https://www.google.com/maps/contrib/110079468800883629471/reviews?hl=en) ★★★★★Google review excerpt > “They were prompt, professional, hard working and kind. They did an amazing job on a very hot day.” Neil Ingber [Read on Google ↗](https://www.google.com/maps/contrib/116118435521305874006/reviews?hl=en) ★★★★★Google review excerpt > “I highly recommend Inline Fibreglass! Everything went very smoothly, from the initial visit to the installation.” Marny Gibson [Read on Google ↗](https://www.google.com/maps/contrib/115466307231504639914/reviews?hl=en) Reviews 1–3 of 6 ## Start With a Few Project Details 01 ### Tell us what you’re planning Share your location, window needs, and the details you already have. 02 ### Review your options Inline’s team will review your inquiry and help identify suitable products and next steps. 03 ### Move toward your quote Discuss the information needed to prepare your quote, including measurements, configurations, and installation requirements where applicable. [ Get My Free Window Quote ](#quote) ## FAQs How much do fiberglass windows cost?Pricing depends on window quantities, sizes, styles, glass packages, finishes, and installation requirements. Send your project details to request a quote based on what you need. Does Inline install replacement windows?Yes. Inline offers direct installation using its own installers. Availability and the installation approach must be confirmed for your project location. Can I request custom sizes or colours?Yes. Inline can review custom sizing and colour options. Availability depends on the selected window series, configuration, and project requirements. Are triple-pane windows available?Double- and triple-pane glass options are available for applicable window series. Inline can help you compare configurations for your project. Do I need exact measurements before contacting Inline?Start with the information you have. Include approximate sizes or project notes if available, and the team can explain what additional information is needed. Can I see the windows before deciding?Yes. You can request a visit to Inline’s Etobicoke showroom to review product options and details in person. ## Get Your Free Fiberglass Window Quote Tell us about your project. Inline’s team will review your request and contact you about the next step. Prefer to talk? [Call 416-679-1171↗](tel:+14166791171) ![Inline Fiberglass showroom visit for window and door selections.](https://inlinefiberglass.com/wp-content/uploads/2026/06/Inline-Showroom-visit-01.jpg "Inline-Showroom-visit-01 - Inline Fiberglass - Inline Fiberglass") Inline Windows — Google Ads Quote Newsletter Full name Email address Phone number Project city or town Project details I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request My Free Quote ![Inline Fiberglass logo.](https://inlinefiberglass.com/wp-content/uploads/2026/05/inline-logo-full-light.png "inline-logo-full-light - Inline Fiberglass - Inline Fiberglass") 30 Constellation Court Etobicoke, Toronto, ON M9W 1K1 [416-679-1171 ↗](tel:+14166791171) © 2026 Inline Fiberglass [Privacy Policy](https://inlinefiberglass.com/privacy-policy/) [Terms & Conditions](https://inlinefiberglass.com/terms-and-conditions/) [Accessibility](https://inlinefiberglass.com/accessibility/) [Warranty](https://inlinefiberglass.com/resources/warranty/) [Service & Parts](https://inlinefiberglass.com/services/service-parts-requests/) [Get My Free Window Quote](#quote)[Call](tel:+14166791171) --- ### [900 Series Double Hung](https://inlinefiberglass.com/products/fiberglass-windows/900-series-double-hung/) **Published:** June 8, 2026 **Author:** anthony@webhaven.ca **Content:** # 900 Series Double Hung Fiberglass Windows Classic double hung operation, built with the strength and stability of our fiberglass windows. [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 900 Series double-hung fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/900SERIES_vectorarrow-1920w-1024x1024.webp "900+SERIES_vector+arrow-1920w - Inline Fiberglass - Inline Fiberglass") ## A Better Double Hung Window Starts with the Frame The 900 Series gives buyers the familiar look and function of a double hung window, but with the advantages of Inline’s fiberglass platform. The current 900 Series page highlights exceptional strength, wide temperature tolerance, energy savings, condensation and humidity control, customization flexibility, and double pane glass availability. Inline’s fiberglass windows are built around long-term performance. Fiberglass helps support strength, dimensional stability, and clean sightlines, making it a practical choice for projects where comfort, durability, and appearance all matter. [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## Advantages of the 900 Series The Inline Fiberglass 900 Series is designed for homeowners, builders, and project teams who want a traditional double hung window with modern performance advantages. Both the top and bottom sashes operate, giving you flexible ventilation, easier cleaning access, and a clean window style that works well in residential, renovation, and selected light commercial applications. **Key benefits:** - Top and bottom sash operation for better airflow - Tilt-in sash access for easier cleaning from inside - Pultruded fiberglass frame strength and dimensional stability - Available with double pane glass options - Custom colour and finish options available - Designed for comfort, energy efficiency, and long-term performance [ Request a Free Quote ](#form) ## Where the 900 Series Double Hung Window Fits Best The 900 Series is a strong fit for projects that need a traditional window style with flexible ventilation and everyday practicality. The double hung design allows both the upper and lower sashes to operate, giving homeowners greater control over airflow while maintaining the classic appearance. ### Living Rooms Bring natural light and fresh air into gathering spaces with a traditional window design that complements a wide range of home styles. ### Traditional Home Designs The classic double hung appearance works well with heritage-inspired, transitional, and traditional architectural designs. ### Renovation Projects Upgrade older windows while maintaining the familiar look many homeowners prefer, with the added benefits of modern fiberglass construction. ### Bedrooms The 900 Series is a practical choice for bedrooms, offering flexible ventilation options and a familiar operating style that is easy to use every day. ### Flexible Ventilation Open the lower sash, upper sash, or both to help support natural airflow and improve comfort throughout the room. ### Hard-to-Reach Locations The double hung design can make cleaning and maintenance more convenient in upper-floor rooms and areas where exterior access is limited. [ Download Product Specs ](#product-specs) [ Request a Free Quote ](#form) ## Built for Comfort , Efficiency, and Humidity Control The 900 Series is designed to help support better interior comfort. Its fiberglass frame platform, insulating glass options, and double pane availability help reduce the common trade-off between traditional window styling and modern performance. For homeowners, that can mean a more comfortable room and less worry about drafts, condensation, and seasonal temperature swings. For builders and specifiers, it means a double hung option that can be considered for projects where durability, appearance, and energy performance all matter. **Available performance options may include:** - Double pane glass - IGMAC-certified insulating glass units - Low-E coating options, including 180, 272, 366, and i89 - Standard, semi-standard, and custom colour options - Product documentation for planning and review Final glass package, NFRC performance values, and Energy Star eligibility should be confirmed for the specific unit size, glazing configuration, and project requirements. [ Download Product Specs ](#product-specs) ## Classic Window Style, Custom Project Details The 900 Series works well when the project calls for a clean, traditional window style without giving up customization. Inline supports standard, semi-standard, and custom colour options, with standard and oversized product configurations available depending on project requirements. **Customize the 900 Series with:** - White standard colour - Semi-standard colours including Commercial Brown, Almond, Brownstone, Slate, Tricorn Black, and Iron Ore - Custom colours - Double or pane glass options - Low-E coating options including 180, 272, 366, and i89 - Standard or oversized product configurations [ Download Specs ](#specs) [ Explore Custom Options ](https://inlinefiberglass.com/services/custom-fiberglass-windows/) ## Customize the 900 Series for Your Project The 900 Series can be tailored to suit the performance, appearance, and documentation needs of your project. ## 01 ### Glass Options Double and triple pane glass options are available. Inline also offers IGMAC-certified insulating glass units to support performance and durability. [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## 02 ### Colour Options Choose from standard colours or request a custom colour match. Inline’s fiberglass windows can be finished in light or dark colours for interior and exterior design needs. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## 03 ### Grilles and Design Grilles can change the entire character of a window. They can make a new window feel more traditional, more architectural, or more consistent with a home. [ View Grille and SDL Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/window-grilles-and-sdl-bars/) ## See the 900 Series in Real Spaces Explore how the 900 Series is used across homes and projects where ventilation, comfort, and clean architectural design are priorities. ## 900 Series Drawings and Installation Resources Planning a project? Access available 900 Series technical documents to help with product review, specification, and installation planning. ### 900 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/900_Series_Product_Drawings.pdf) ### 900 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/900v3-2004.zip) ### Installation Guide Review installation information for single 900 Series units. [**Download Single Unit Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/900inst-1-merged.pdf) For project-specific performance data, certification documentation, or glass package confirmation, contact Inline Fiberglass before final specification. ## Common Questions About 900 Series Double Hung Window Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where is the 900 Series best used? The 900 Series is best used in homes and projects where a traditional double hung window style is preferred. It works well for bedrooms, living areas, upper floors, renovation projects, and spaces where top-and-bottom ventilation is useful. What makes the 900 Series different from a single hung window? A single hung window has one operating sash and one fixed sash. A double hung window allows both the top and bottom sashes to operate. This gives you more ventilation control and makes cleaning easier. Is the 900 Series energy efficient? The 900 Series can be configured with double or triple pane glass and Low-E coating options. Energy Star eligibility depends on the selected glazing configuration, and exact performance values should be confirmed through NFRC for the specific unit. Can I choose custom colours? Yes. White is the standard colour; Commercial Brown, Almond, Brownstone, Slate, Tricorn Black, and Iron Ore are semi-standard colours; and anything else is custom. Is the 900 Series available for commercial projects? The 900 Series may be suitable for selected commercial, multi-residential, or light commercial applications depending on the project requirements. For larger or more technical projects, request product support so Inline can confirm the best series, glass package, and documentation. Are drawings available? Yes. The 900 Series page above includes links for drawings, CAD drawings, and installation documents. Is the 900 Series Passive House certified? For high-performance project requirements, contact Inline to confirm the right product, glazing package, and certification documentation. ## Ready to Plan Your 900 Series Window Project? Tell us about your project and our team will help you take the next step. Whether you are replacing windows, planning a custom home, preparing architectural drawings, or reviewing options for a commercial project, Inline Fiberglass can help you confirm the right product path. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Tell Us About Your Window Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Newsletter First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Window Series Comparison Guide](https://inlinefiberglass.com/resources/window-series-comparison-guide/) **Published:** June 13, 2026 **Author:** anthony@webhaven.ca **Content:** # Compare Inline Fiberglass Window Series Compare operating styles, design flexibility, ventilation options, and project applications across Inline’s fiberglass window series. [ Read More ](#article) ## Compare operating styles, design flexibility, ventilation options, and project applications Choosing the right fiberglass window series depends on how the window needs to work, where it will be installed, and what matters most for your project: ventilation, large glass, traditional style, modern design, high-performance building, or easy maintenance. Inline Fiberglass offers several window series for residential, commercial, architectural, and high-performance projects. This guide helps you compare the main options and narrow your selection before requesting a quote or product specs. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Quick Answer: Which Inline window series should you choose? - [ For flexible ventilation and easy interior cleaning, consider the 300 Series Tilt & Turn. ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) - [ For outward-opening casement or awning operation, compare the 325 Series. ](https://inlinefiberglass.com/products/fiberglass-windows/) - [ For large fixed glass and modern architectural layouts, review the 400 Series Strip / Fixed. ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) - [ For inward-opening casement or hopper needs, consider the 700 Series. ](https://inlinefiberglass.com/products/fiberglass-windows/700-series-casement-hopper/) - [ For traditional sliding or hung window styles, compare the 800, 850, and 900 Series. ](https://inlinefiberglass.com/products/fiberglass-windows/) The right choice depends on opening style, frame appearance, glass size, project type, and performance requirements. For Passive House or high-performance projects, confirm the applicable product data, certification scope, glazing package, and documentation with Inline before specifying. [ Talk to a Product Specialist ](tel:1-866-566-5656) ## A Fiberglass Window System for Different Project Needs Inline’s fiberglass window lineup is not one generic window offered in different shapes. Each series is designed around a different job: more ventilation, larger glass, traditional styling, commercial applications, or high-performance design. Use this guide as a starting point. For final product selection, confirm details such as sizing, glass package, certification scope, technical drawings, installation conditions, and project requirements with Inline’s team. **Proof points to include visually on page, where available:** - Product series photos - Operating-style diagrams - Links to spec sheets and technical downloads - Certification references with product-specific scope - Residential and commercial project examples - Request a Quote and Request Product Specs CTAs [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Window Series Comparison Matrix | Window Series | Operating Style | Strong Fit | Common Project Use | Consider When | |---|---|---|---|---| | 300 Series Tilt & Turn / Fixed | Tilt inward for ventilation; turn inward for full opening; fixed option available | Flexible ventilation, cleaning from inside, airtight-feeling operation | Custom homes, high-performance homes, modern residential projects, architectural projects | You want European-style operation and flexible airflow | | 325 Series Casement | Hinged side sash opens outward | Strong ventilation and clear opening | Residential, custom homes, light commercial projects | You want a classic outward-opening window with strong airflow | | 325 Series Awning | Hinged top sash opens outward from bottom | Ventilation with rain-shedding function | Bathrooms, kitchens, basements, mixed window layouts | You want fresh air while limiting direct rain entry | | 325 Series Fixed | Non-operable fixed glass | Matching fixed units beside operable 325 windows | Residential and commercial layouts | You need fixed glass with visual consistency beside casement or awning units | | 400 Series Strip / Fixed | Fixed strip or large fixed configurations | Large glass, modern design, architectural layouts | Commercial, institutional, contemporary residential, Passive House-oriented projects where applicable | You want expansive glass and clean sightlines | | 700 Series Casement / Hopper / Fixed | In-swing casement or hopper; fixed option available | Inward operation, safety, interior access | High-rise, urban, commercial, and projects where outward operation is not ideal | Exterior clearance or safety makes outward-opening windows impractical | | 800 Series Horizontal Slider | Sash slides horizontally | Space-saving operation | Bedrooms, multi-unit residential, traditional layouts, areas with limited exterior clearance | You want easy horizontal operation without outward swing | | 850 Series Single Hung | Lower sash slides vertically upward; upper sash remains fixed | Traditional appearance, space-saving vertical operation | Residential replacement, traditional home styles, bedrooms and living spaces | You want a classic vertical window profile with simple, familiar operation | | 900 Series Double Hung | Both upper and lower sashes slide vertically for two-way ventilation | Traditional style with added airflow control and easier cleaning access | Traditional homes, upper-floor rooms, residential replacement | You want more ventilation flexibility than single hung, in a traditional format | ## Product Selection Guide Compare window operation, ventilation, design flexibility, and applications to identify the right Inline fiberglass window series for your needs. ## Best for flexible ventilation: 300 Series Tilt & Turn The 300 Series Tilt & Turn is designed for projects where one window needs to do more than one job. In the tilt position, the sash opens inward at the top for secure ventilation. In the turn position, the sash opens inward more fully for access, cleaning, and stronger airflow. This series is a strong fit for homeowners, architects, and builders who want a premium operating style with practical day-to-day benefits. **Good fit for:** - Bedrooms and living areas - High-performance residential projects - Projects where interior cleaning access matters - Modern homes and custom builds - Buyers comparing tilt and turn vs casement windows [ Explore 300 Series Tilt & Turn Windows ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) ## Best for classic outward-opening airflow: 325 Series Casement The 325 Series Casement is a strong choice when the project calls for an outward-opening window with effective ventilation and a clean residential or light commercial appearance. Casement windows are often selected for rooms where airflow matters, including bedrooms, living spaces, and areas where a wide sash opening is preferred. **Good fit for:** - Bedrooms - Living rooms - Custom homes - Replacement projects - Residential and light commercial applications [ Explore 325 Series Casement Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-casement/) ## Best for ventilation during changing weather: 325 Series Awning The 325 Series Awning opens outward from the bottom, with the hinge at the top. This makes it useful in spaces where ventilation is important but direct exposure to rain should be reduced. Awning windows are often used above, below, or beside fixed windows to add airflow without changing the overall design too much. **Good fit for:** - Bathrooms - Kitchens - Basements - Multi-window combinations - Rooms where controlled airflow is important [ Explore 325 Series Awning Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-awning/) ## Best for large fixed glass and modern layouts: 400 Series Strip / Fixed The 400 Series Strip / Fixed is designed for fixed glass applications where the goal is clean sightlines, daylight, and architectural impact. This series is often the right starting point for large glass areas, strip window layouts, contemporary homes, commercial buildings, institutional projects, and high-performance building designs. **Good fit for:** - Large fixed glass - Modern residential design - Commercial buildings - Institutional projects - Passive House and high-performance projects where applicable - Projects where ventilation is handled by separate operable units [ Explore 400 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) ## Best for inward-opening applications: 700 Series Casement / Hopper / Fixed The 700 Series is designed for projects where inward operation makes more sense than outward operation. This can be important in high-rise, urban, walkway-adjacent, or tightly configured projects where outward-opening windows may not be suitable. The series includes casement, hopper, and fixed options, giving designers flexibility when exterior clearance, safety, or maintenance access matters. **Good fit for:** - High-rise or multi-storey projects - Urban buildings - Areas with exterior clearance limits - Projects where interior access is preferred - Commercial or residential applications requiring inward operation [ Explore 700 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/700-series-casement-hopper/) ## Best for horizontal operation: 800 Series Horizontal Slider The 800 Series Horizontal Slider is designed for spaces where a sliding sash is the preferred operating style. Because the sash slides side to side, it does not project inward or outward. This can make it a practical choice for bedrooms, multi-unit residential layouts, and areas where exterior space is limited. **Good fit for:** - Bedrooms - Multi-unit residential projects - Traditional layouts - Tight exterior conditions - Areas where simple sliding operation is preferred [ Explore 800 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/800-series-horizontal-slider/) ## Best for traditional single hung style: 850 Series Single Hung The 850 Series Single Hung offers a familiar vertical window style, with the lower sash moving upward while the upper sash remains fixed. This series is a good fit for projects that need a traditional appearance, simple operation, and space-saving vertical movement. **Good fit for:** - Traditional home styles - Residential replacement - Compact exterior spaces - Bedrooms and living spaces - Projects where a classic window profile is preferred [ Explore 850 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/850-series-single-hung/) ## Best for traditional style with more ventilation control: 900 Series Double Hung The 900 Series Double Hung allows both the upper and lower sashes to move. This gives homeowners more control over airflow than a single hung configuration. Double hung windows are often chosen for traditional elevations, upper floors, and projects where tilt-in cleaning access is useful. **Good fit for:** - Traditional homes - Upper-floor rooms - Residential replacement - Balanced top-and-bottom ventilation - Buyers comparing single hung vs double hung windows [ Explore 900 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/900-series-double-hung/) ## Compare By Project Need ## I want the most flexible ventilation Start with the **300 Series Tilt & Turn, 325 Series Casement, or 900 Series Double Hung.** Tilt and turn windows offer two opening modes. Casement windows provide strong outward airflow. Double hung windows allow top-and-bottom ventilation in a traditional format. [ Talk to a Product Specialist ](tel:1-866-566-5656) ## I want large glass and a modern look Start with the **400 Series Strip / Fixed.** Fixed windows are often the better fit when the main goal is daylight, views, and clean architectural lines. Operable units can often be combined with fixed units depending on the design. [ View 400 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) ## I need a window for a bedroom Common options include **casement, tilt and turn, horizontal slider, single hung, or double hung windows.** The right choice depends on egress requirements, ventilation preference, room layout, exterior clearance, and design style. Do not choose by style alone; confirm code, sizing, and operation requirements for the specific room. [ Talk to a Product Specialist ](tel:1-866-566-5656) ## I need something for a Passive House or high-performance project Start with **product documentation, not assumptions.** Select Inline products may support high-performance building needs, but certification scope and performance depend on the exact series, size, glazing package, and configuration. Confirm current product data, applicable certifications, and documentation with Inline before specifying. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## I want a traditional window style Start with the **850 Series Single Hung, 900 Series Double Hung, or 800 Series Horizontal Slider.** These styles are often familiar to homeowners and can work well when the design calls for a more traditional look. [ Compare Traditional Window Styles ](https://inlinefiberglass.com/services/custom-fiberglass-windows/) ## I have a commercial or multi-unit project Start with the **400 Series, 700 Series,** or other series based on operation, project conditions, and technical requirements. For commercial projects, product choice should be reviewed with the project’s performance targets, drawings, opening conditions, lead-time needs, and documentation requirements. [ Request Project Support ](tel:1-866-566-5656) ## Understanding Common Window Operating Styles Compare how different window styles function, where they are commonly used, and the factors that may help determine the right fit for your project. ## Tilt and turn vs casement windows A **tilt and turn window** opens inward in two ways. It can tilt at the top for controlled ventilation or turn inward for fuller access. A **casement window** usually opens outward from the side. It is a strong choice when the goal is direct ventilation and a familiar operating style. Choose tilt and turn when you want inward operation, flexible ventilation, and easier access to the outside glass from indoors. Choose casement when you want a classic outward-opening window with strong airflow. ## Fixed vs awning windows A **fixed window** does not open. It is usually chosen for daylight, views, energy performance goals, and clean design. An **awning window** opens outward from the bottom and is commonly used where ventilation is needed. Because the sash angles outward, it can help provide airflow during light rain conditions depending on exposure and installation. Choose fixed windows for large glass and views. Choose awning windows where you need ventilation in kitchens, bathrooms, basements, or mixed window layouts. ## Single hung vs double hung windows A **single hung window** has one moving sash, usually the lower sash. A **double hung window** has two moving sashes, allowing more ventilation control. Choose single hung when you want a simpler traditional style. Choose double hung when you want more airflow flexibility and easier access for cleaning where the tilt feature is available. ## Need specs, drawings, or certification details? For architects, builders, developers, and performance-focused homeowners, product selection should be backed by current technical documentation. **Inline can help you confirm:** - Which series fits your project - Available operating styles - Glass and colour options - Product documentation - Applicable certification details - Fixed vs operable combinations - Quote requirements - Technical questions before specification [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Common Questions About About Inline Fiberglass Windows Find clear answers to common questions about Inline fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Which Inline fiberglass window series is best for bedrooms? Bedrooms may use casement, tilt and turn, slider, single hung, or double hung windows depending on size, egress requirements, ventilation needs, and design preference. The safest answer is to confirm the opening size, local code requirements, and operating style with Inline before choosing. Which series supports the largest glass areas? For large fixed glass, the 400 Series Strip / Fixed is often the starting point. It is designed for fixed and strip window applications where daylight, sightlines, and architectural layouts matter. Final sizing and configuration should be confirmed with Inline. Which Inline window series is best for Passive House projects? Passive House and high-performance projects should be reviewed by product configuration, not just series name. Confirm the latest product data, glazing package, certification scope, and documentation with Inline before specifying. What is the difference between tilt and turn and casement windows? Tilt and turn windows open inward and usually offer two operating modes: tilt ventilation and full inward turn. Casement windows typically open outward from the side. Tilt and turn is often preferred for flexible inward operation, while casement is often preferred for classic outward airflow. What is the difference between fixed and awning windows? Fixed windows do not open and are used for views, daylight, and clean design. Awning windows open outward from the bottom and are used when ventilation is needed. Are fiberglass windows good for traditional homes? Yes, fiberglass windows can support traditional window styles such as single hung, double hung, and horizontal slider designs. The right series depends on the home’s architecture, opening size, ventilation needs, and desired finish. Can I mix different window series in one project? Many projects use a combination of fixed and operable windows. For example, a large fixed window may be paired with awning or casement units for ventilation. Inline can help confirm which combinations fit the project. Can I get custom colours or glass options? Inline offers window options that may include glass, colours, grilles, and hardware choices. Confirm available options, limits, and lead-time implications with Inline for your specific series and project. Do I need to know the exact series before requesting a quote? No. You can request a quote even if you are not sure which series fits. Share your project type, location, window sizes if available, preferred style, timeline, and any performance requirements. Inline’s team can help route you toward the right product path. ## Not sure which window series fits your project? You do not need to choose alone. Tell Inline about your project, and the team can help you compare operating styles, fixed vs operable options, technical documents, and quote requirements. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [600 Series Sliding Patio Doors](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) **Published:** June 8, 2026 **Author:** anthony@webhaven.ca **Content:** # 600 Series Sliding Patio Doors Commercial-Grade Fiberglass Sliding Patio Doors Built for Large Openings and High-Performance Projects [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 600 Series black sliding patio door.](https://inlinefiberglass.com/wp-content/uploads/2026/06/600-DOUBLE-DOOR-BLACK-1920w-03-1024x1024.webp "600-DOUBLE-DOOR-BLACK-1920w-03 - Inline Fiberglass - Inline Fiberglass") ## Create Seamless Indoor-Outdoor Connections Create a stronger connection between indoor and outdoor space with the Inline Fiberglass 600 Series Sliding Patio Door. Designed for patios, decks, modern homes, commercial openings, and high-performance building projects, the 600 Series combines smooth sliding operation, durable fiberglass construction, and energy-efficient glass options in a clean, architectural door system. Whether you are replacing an existing patio door, planning a custom build, or specifying a performance-focused project, Inline can help you confirm the right configuration, double or triple glazing option, and technical documentation for your needs. [ Download Brochure ](https://inlinefiberglass.com/wp-content/uploads/2026/09/600-Brochure.pdf) [ Request a Free Quote ](#form) ## Designed for Comfort, Light, and Long-Term Performance Sliding patio doors need to do more than open and close. They need to carry large glass panels, resist weather exposure, reduce drafts, and keep operating smoothly over time. The 600 Series is built around Inline’s fiberglass platform, making it a strong option for homeowners, architects, builders, and developers who want a patio door that supports comfort, durability, and clean design. **Use the 600 Series for:** - Patio, deck, garden, and terrace access - Large residential openings - Modern homes and additions - High-performance and Passive House-oriented projects - Commercial or multi-unit applications where a sliding door system is required - Projects that need product drawings, specs, and documented performance data [ Talk to a Specialist ](tel:1-866-566-5656) ## Performance Proof for Serious Door Projects The 600 Series is not positioned as a basic patio door. It is built for projects where the door is part of the building envelope. The updated client answers confirm that Energy Star Most Efficient applies to the 600 Series with triple glazing. The 600 Series was not listed in the client’s PHIUS-certified product list, so PHIUS or Passive House certification language should not be used for this product unless Inline provides product-specific certification documentation. Performance varies by size, glass package, installation, and project requirements, so final ratings should always be confirmed with Inline before specification. [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## Smooth Sliding Access Without Sacrificing Energy Efficiency A sliding patio door is often one of the largest openings in a home or building. That makes material choice important. The 600 Series is designed to help reduce the common trade-off between large glass and energy performance. Its fiberglass construction supports strength, dimensional stability, and thermal performance, while available glass packages help match the door to the project’s comfort and efficiency goals. For homeowners, that means a patio door designed for everyday use, natural light, and better comfort. For architects, builders, and specifiers, it means a sliding door system with documentation available for review during product selection. [ Request a Free Quote ](#form) ## Who the 600 Series Is Designed For Whether you’re upgrading a home, specifying a project, or coordinating a build, the 600 Series offers fiberglass durability, energy-efficient glass options, and flexible configurations to support a wide range of project goals. ## For Homeowners Choose the 600 Series if you want a durable, energy-efficient sliding patio door for a home renovation, replacement project, addition, or custom build. **Common homeowner goals:** - More natural light - Better patio or backyard access - Improved comfort near large openings - A cleaner modern look - A stronger alternative to ordinary sliding doors [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## For Architects & Specifiers Use the 600 Series when your project requires a fiberglass sliding patio door with available technical documentation, performance data, and high-performance project support. **Common specifier needs:** - Product drawings - Glass package details - Performance data - Passive House/Phius documents - Configuration and sizing support [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## For Builders and Contractors The 600 Series can support residential, light commercial, and multi-unit applications where a durable sliding patio door system is required. **Common project needs:** - Clear product coordination - Size and configuration confirmation - Technical documents - Glass and finish options - Project quote support [ Talk to a Specialist ](tel:1-866-566-5656) ## Built Around Fiberglass Fiberglass is the material Inline is built around. It is not a side product line. For sliding patio doors, that matters because large glass panels place more demand on the frame, hardware, seals, and installation. Fiberglass helps support the structural stability and long-term performance needed for larger openings. **Why fiberglass makes sense for sliding patio doors:** - Stronger support for larger glass areas - Better dimensional stability than many common frame materials - Good thermal performance for energy-efficient projects - Clean frame profiles for modern design - Durable finish options for residential and commercial applications [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## 600 Series Drawings and Installation Resources Download current size guidance, drawings, CAD files, and installation documents from Inline before quoting or specifying the 600 Series. ## 600 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/600_Series_Product_Drawings.pdf) ## 600 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/600_Series_Product_Drawings.pdf) ## Installation Guide — Option One Review installation information for option one of the 600 Series units. [**Download Single Unit Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/07/600v3-2004.zip) ## Installation Guide — Option two Review installation information for option two of the 600 Series units. [**Download Coupled Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/600_i_o2.pdf) For project-specific performance data, certification documentation, or glass package confirmation, contact Inline Fiberglass before final specification. ## Glass, Colour, and Hardware Options Every project has different design and performance needs. The 600 Series can be reviewed with available glass, colour, finish, grille, and hardware options to match the right look and function. **Available options may include:** - Double and triple glazing options - White as the standard colour - Commercial Brown, Almond, Brownstone, Slate, Tricorn Black, and Iron Ore as semi-standard colours - Custom colour capability - Hardware options for smooth operation and security - Grille and divided-lite design options Inline can do custom colours. Final colour selection, finish details, glazing choice, hardware, grille options, and any project-specific requirements should be confirmed during the quote or specification process. [ Explore Custom Options ](https://inlinefiberglass.com/book-showroom-visit/) ## 600 Series Handle Options The 600 Series is available with a selection of premium handle options in a variety of colours and finishes, allowing you to coordinate the hardware with your home’s architectural style while providing smooth everyday operation and dependable security. ![Black vertical door pull handle mounted on a door or wall, with a rectangular base and a small top latch/knob at the upper end](https://inlinefiberglass.com/wp-content/uploads/2026/07/Secura-9100-Handle.png "Secura 9100 Handle - Inline Fiberglass - Inline Fiberglass") ## Secura 9100 Handle The 9100 Sliding Patio Door handle combines contemporary styling with practical functionality, offering a sleek, low-profile design that enhances both appearance and everyday operation. Its integrated thumbturn is positioned above the handle for a clean, modern look, while the slim 1.2-inch profile minimizes intrusion into the glazing area to maximize glass visibility and sightlines. The handle is compatible with standard three-cross-hole drilling and is available with a matching exterior handle, including a keyed option for added security. To complement a variety of door styles, it is offered in durable powder-coated colours including White and Black. ![Black vertical door hardware component with an adjustable bolt and mounting screws, used to secure a door.](https://inlinefiberglass.com/wp-content/uploads/2026/07/Secura-9100-D-Handle.png "Secura 9100-D Handle - Inline Fiberglass - Inline Fiberglass") ## Secura 9100-D Handle The 9100D Sliding Patio Door handle builds on the proven design of the 9100 series while providing enhanced operation for larger, heavier sliding patio doors. Its stable handle lever offers improved control and durability without sacrificing the sleek, contemporary appearance of the original design. An integrated thumbturn positioned above the handle delivers a clean, refined look, while a matching exterior handle with an optional keyed configuration provides added security. The 9100D is available in durable powder-coated colours including White and Black, as well as a premium Satin Nickel architectural finish to complement a variety of door styles. ![Side view of a glossy black circular hoop attached to a vertical black rectangular mount.](https://inlinefiberglass.com/wp-content/uploads/2026/07/Secura-9700-Handle-01.png "Secura 9700 Handle-01 - Inline Fiberglass - Inline Fiberglass") ## 662 Mortise 9700 The 662 Mortise 9700 Handle combines clean, timeless styling with durable one-piece zinc construction for dependable everyday performance. Its robust design provides a solid, comfortable grip while offering the strength and corrosion resistance expected in a premium sliding patio door handle. Available in two durable powder-coated colours including White and Black, the 662 Mortise 9700 can be matched to a wide variety of door styles and architectural aesthetics, making it a versatile option for both residential and light commercial applications. ![Profile view of a black door handle mounted on a vertical door plate, shown from the side](https://inlinefiberglass.com/wp-content/uploads/2026/07/Secura-9700-Euro-Handle-02.png "Secura 9700 Euro Handle-02 - Inline Fiberglass - Inline Fiberglass") ## 9700 Euro Handle The Secura 9700 Euro Handle offers a refined architectural appearance with an extended 10.5-inch profile that enhances both aesthetics and everyday usability. It provides a cohesive look across premium sliding patio door configurations while delivering a comfortable, substantial grip. Available in durable powder-coated colours including White and Black, as well as a premium Satin Nickel architectural finish, and an optional keyed exterior handle adds an extra layer of security where required. The result is a premium hardware solution that combines elevated style with reliable day-to-day performance. ## Selection & Finish Note Handle availability can depend on the door configuration, panel layout, and current supplier availability. Confirm the Secura handle and selected finish during quoting. [ Visit an Inline Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Common Questions About 600 Series Sliding Patio Doors Find clear answers to common questions about 600 Series Sliding Patio Doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What configurations are available for the 600 Series Sliding Patio Door? The 600 Series is available in 2-panel, 3-panel, and 4-panel layouts. Common layouts include FO, OF, FFO, OFF, and FOOF, where “F” means fixed panel and “O” means operating sliding panel. Is triple glazing available? Yes. Double and triple glazing options are available for the 600 Series. Energy Star Most Efficient applies with triple glazing. The right glass package depends on the project, performance goals, size, and documentation required. Can the 600 Series support high-performance projects? Yes. The 600 Series can be reviewed for high-performance projects, and Energy Star Most Efficient applies with triple glazing. PHIUS or Passive House certification should be confirmed with Inline before using that language in project specifications. Can the 600 Series be used for commercial projects? Yes. The 600 Series is approved for commercial-grade positioning and may be suitable for certain commercial, multi-unit, and high-performance projects. Final product fit depends on size, performance requirements, code requirements, installation conditions, and project details. Are CAD drawings available? Yes, these files can be downloaded above on our 600 Series Sliding Patio Doors our product page. Can I choose custom colours? White is the standard colour. Commercial Brown, Almond, Brownstone, Slate, Tricorn Black, and Iron Ore are semi-standard colours. Inline can also do custom colours. Final colour selection, finish details, and any project-specific requirements should be confirmed during the quote process. Is this door only for new construction? No. The 600 Series can be reviewed for new construction, renovation, replacement, and commercial applications. The right fit depends on the opening, installation conditions, and project requirements. How do I get a quote? Submit a quote request with your project location, approximate opening size, preferred configuration, timeline, and any drawings or photos available. Inline will review the details and help you take the next step. ## Ready to Plan Your 600 Series Sliding Patio Door? Get the performance, light, and clean design of a fiberglass sliding patio door built for serious residential, commercial, and high-performance projects. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Tell Us About Your Door Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [4500 Series Entrance Doors](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) **Published:** June 8, 2026 **Author:** anthony@webhaven.ca **Content:** # 4500 Series Fiberglass Entrance Doors Custom fiberglass entry doors built for curb appeal, comfort, and long-term performance. [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 4500 Series black fiberglass double entrance door.](https://inlinefiberglass.com/wp-content/uploads/2026/05/4500-DOUBLE-DOOR-BLACK-1920w-02-1024x1024.webp "4500-DOUBLE-DOOR-BLACK-1920w-02 - Inline Fiberglass - Inline Fiberglass") ## Fiberglass Entrance Doors Designed for Lasting First Impressions Your front door does more than welcome people in. It helps shape the look, comfort, security, and energy performance of your home. Inline Fiberglass 4500 Series entrance doors are designed for homeowners, builders, renovators, and architects who want a strong, attractive, energy-efficient front door with flexible design options. Choose from modern glass styles, traditional rail and stile looks, plank door designs, sidelites, transoms, and colour options, including custom colours, to create an entrance that fits your home. [ Download Brochure ](https://inlinefiberglass.com/wp-content/uploads/2026/09/4500-Series-Brochure.pdf) [ Request a Free Quote ](#form) ## Is the 4500 Series Right for Your Project? The 4500 Series is a strong fit for: ### Front Door Replacements Upgrade an older front entry with a fiberglass entrance door that improves curb appeal and supports better comfort. ### Custom Homes and Renovations Choose a door style, glass layout, sidelite, transom, and colour that works with your architectural plans. ### Modern Residential Entryways Create a clean, contemporary look with narrow glass panels, bold colour, stainless steel accents, or plank-style designs. ### Traditional Home Designs Use rail and stile layouts, decorative glass, sidelites, and transoms to complement heritage, transitional, or classic home designs. ### Larger Entry System Entrances Pair your entrance door with sidelites or transoms to bring more natural light into your entryway and create a more open first impression. ### Energy-Efficient Home Upgrades For homeowners looking to improve comfort and energy performance, fiberglass entrance doors can be paired with high-performance glass to support a more efficient building envelope. ## Entrance Door Styles for the Way Your Home Should Look The 4500 Series gives you multiple ways to design your entry. ### Modern Glass Doors Add clean vertical or horizontal glass lines for a modern front entry with more natural light. ### 3/4 Lite Doors Use a larger glass area to brighten the entry while keeping a strong fiberglass door structure. ### Double Doors Create a wider, more dramatic entrance for larger homes, custom builds, and statement front entries. ### Rail & Stile Designs Choose a more traditional entry look with glass, panel, and sidelite combinations. ### Plank Doors Get the warmth of a wood-inspired look with the durability advantages of fiberglass. ### Sidelites and Transoms Frame the entrance with glass panels beside or above the door to bring in more light and create a more open entry. ## Explore 4500 Series Door Options Explore the full Inline fiberglass 4500 Series Door lineup. ![Black Inline Fiberglass 4500 Series double entrance door.](https://inlinefiberglass.com/wp-content/uploads/2026/06/DOUBLE-DOOR-BLACK-1920w-791x1024.webp "DOUBLE-DOOR-BLACK-1920w - Inline Fiberglass - Inline Fiberglass") ## 4500 Series Double Door A wider entrance option for homes that need a more substantial front entry. Ideal for custom homes, larger foyers, and statement entrances. [ Request This Door Style ](#form) ![Gray Inline Fiberglass 4500 Series fiberglass entrance door slab.](https://inlinefiberglass.com/wp-content/uploads/2026/06/4500-DOOR-SLAB-GRAY-1920w-791x1024.webp "4500-DOOR-SLAB-GRAY-1920w - Inline Fiberglass - Inline Fiberglass") ## 4500 Series 3/4 Lite A fiberglass entrance door with a larger glass area for more natural light and a brighter entry. [ Ask About 3/4 Lite Doors ](#form) ![Black Inline Fiberglass 4500 Series entrance door with single sidelight.](https://inlinefiberglass.com/wp-content/uploads/2026/06/4500-DOOR-SINGLE-SIDELIGHT-BLACK-1920w-791x1024.webp "4500-DOOR-SINGLE-SIDELIGHT-BLACK-1920w - Inline Fiberglass - Inline Fiberglass") ## 4500 Series 5 Lite A modern glass-panel style for homeowners who want clean lines and a contemporary look. [ Request a Free Quote ](#form) ![Inline Fiberglass 4500 Series fiberglass entrance door slab.](https://inlinefiberglass.com/wp-content/uploads/2026/06/4500-DOOR-SLAB-1920w-791x1024.webp "4500-DOOR-SLAB-1920w - Inline Fiberglass - Inline Fiberglass") ## Rail & Stile 3/4 Lite with Sidelite A balanced option for traditional or transitional homes that need both style and natural light. [ Explore Rail & Stile Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) ![Inline Fiberglass 4500 Series fiberglass entrance door in isometric view.](https://inlinefiberglass.com/wp-content/uploads/2026/06/SLABDOOR4ISO-1920w-1-791x1024.webp "SLAB+DOOR4+ISO-1920w-1 - Inline Fiberglass - Inline Fiberglass") ## 4500 Series Plank Door A wood-inspired look with the durability advantages of fiberglass. [ Ask About Plank Doors ](https://inlinefiberglass.com/contact/) ![Inline Fiberglass 4500 Series entrance door with sidelight.](https://inlinefiberglass.com/wp-content/uploads/2026/06/SLAB-DOOR-SIDELIGHT-4-1920w-791x1024.webp "SLAB-DOOR-SIDELIGHT-4-1920w - Inline Fiberglass - Inline Fiberglass") ## Plank Door with Sidelite A strong option for entryways that need more light without losing a warm, architectural look. [ Plan This Entryway ](#form) ![Inline Fiberglass 4500 Series single entrance door slab.](https://inlinefiberglass.com/wp-content/uploads/2026/06/SLAB-DOOR-1920w-791x1024.webp "SLAB-DOOR-1920w - Inline Fiberglass - Inline Fiberglass") ## 1V5H / 2V Glass Designs Modern glass layouts for front entries that need a sharper contemporary style. [ Ask About Modern Door Styles ](https://inlinefiberglass.com/contact/) ![Inline Fiberglass 4500 Series entrance door with transom.](https://inlinefiberglass.com/wp-content/uploads/2026/06/SLABDOORTRANSOM-1920w-791x1024.webp "SLAB+DOOR+TRANSOM-1920w - Inline Fiberglass - Inline Fiberglass") ## Doors with Transoms A strong fit for taller entrances, custom homes, and entryways where natural light is a priority. [ Ask About Transom Options ](https://inlinefiberglass.com/contact/) ## Built for Comfort, Weather Protection, and Everyday Use A good front door should not just look right on installation day. It should perform through changing seasons, repeated use, and daily exposure to sun, wind, rain, snow, and temperature swings. ### Insulated Door Panels The polyurethane core helps support energy efficiency and comfort. ### Fiberglass Durability Fiberglass helps resist common door problems such as moisture damage, decay, and pest damage. ### Weather Protection The door system is designed with sealing and weatherstripping details to help protect the home from air and water infiltration. ### Dimensional Stability Fiberglass is a stable material choice for exterior doors, helping support long-term fit and operation. ### Energy-Efficient An entrance door that supports comfort and energy performance without sacrificing design. ### Custom Design Flexibility Choose from available options that create an entrance that fits the home’s architecture and design goals. [ Visit the Showroom ](#specs) [ Request a Free Quote ](#form) ## Colours, Glass, Sidelites, and Transoms Options Your entrance door should complement the home, not force the home to adapt to a limited selection of styles or finishes. The 4500 Series offers a wide range of customization options, allowing homeowners, builders, and designers to create an entrance that aligns with the architectural character of the project. Choose from standard and custom colour options for both the interior and exterior of the door. For projects that require a specific finish, Inline can also support custom colour matching. Complete the design with clear, textured, or decorative glass options that help balance privacy, natural light, and curb appeal. Sidelites can be added beside the door to bring more daylight into the entryway, while transoms above the door help create a brighter, more open, and more architectural appearance. For larger renovation or new construction projects, ask about coordinating your entrance door with Inline fiberglass windows or sliding patio doors to create a consistent look throughout the home. [ Plan Your Entry Door Design ](#specs) ## Handle, Locking & Smart Access Options for the 4500 Series The entrance door handle, backplate, locking system, and finish should be selected as one coordinated package. Final compatibility must be confirmed for the selected door size, backset, handing, and hardware package. ![Roma handle set for Inline Fiberglass entrance doors.](https://inlinefiberglass.com/wp-content/uploads/2026/06/Roma-Handle-Set-55-001.png "Roma-Handle-Set-55-001 - Inline Fiberglass - Inline Fiberglass") ## GU-SECURY Automatic Multi-Point Locking Automatically engages upper and lower tempered-steel latchbolts when the door closes, without lifting the handle. Turning the key or thumbturn activates the central deadbolt and secures all locking points for enhanced security and weather resistance. ![Berlin Tedee black smart lock handle set for Inline Fiberglass entrance doors.](https://inlinefiberglass.com/wp-content/uploads/2026/06/Berlin-Tedee-55-black-1-1024x819.png "Berlin - Tedee 55 black - Inline Fiberglass - Inline Fiberglass") ## Berlin Handle Set — 65 mm Plate A substantial handle package featuring a 65 mm-wide plate measuring 17 mm thick and 475 mm long. Available finishes include Black, Satin Nickel, Dark Bronze, Pewter, and Zamac Brass. ![Roma handle set for Inline Fiberglass entrance doors.](https://inlinefiberglass.com/wp-content/uploads/2026/06/Roma-Handle-Set-55-001.png "Roma-Handle-Set-55-001 - Inline Fiberglass - Inline Fiberglass") ## Roma Handle Set — 55 mm Plate A versatile 55 mm plate available in Zamac or solid-brass construction. Available finishes include Black, Satin Nickel, Dark Bronze, and Pewter. ![Capri handle set for Inline Fiberglass entrance doors.](https://inlinefiberglass.com/wp-content/uploads/2026/06/Capri-handle-set-45-001.png "Capri-handle-set-45-001 - Inline Fiberglass - Inline Fiberglass") ## Capri Lever Handles — 45 mm Plate A 45 mm backplate option that balances traditional styling with modern performance. Available in a range of Zamac and solid-brass finishes, including Black, White, Pewter, Satin Chrome, Satin Nickel, and Dark Bronze. ![Pair of black residential door handles with matching backplates and a latch on each side, shown from front and back.](https://inlinefiberglass.com/wp-content/uploads/2026/06/venice-45-001.png "venice-45-001 - Inline Fiberglass - Inline Fiberglass") ## Venice Lever Handles — 45 mm Plate A 45 mm backplate option that balances traditional styling with modern performance. Available in a range of Zamac and solid-brass finishes, including Black, White, Pewter, Satin Chrome, Satin Nickel, and Dark Bronze. ![Torino entrance door handle set for Inline Fiberglass doors.](https://inlinefiberglass.com/wp-content/uploads/2026/06/Torino-45-001.png "Torino-45-001 - Inline Fiberglass - Inline Fiberglass") ## Torino Lever Handles — 45 mm Plate A 45 mm backplate option that balances traditional styling with modern performance. Available in a range of Zamac and solid-brass finishes, including Black, White, Pewter, Satin Chrome, Satin Nickel, and Dark Bronze. ![Pair of modern black lever door handles with cylindrical lock on vertical backplates, shown against a white background.](https://inlinefiberglass.com/wp-content/uploads/2026/09/Allegro-handle-30-001.png "Allegro-handle-30-001 - Inline Fiberglass - Inline Fiberglass") ## Allegro Lever Handles — 30 mm Plate A slimmer 30 mm backplate for a more compact architectural profile. Zamac finishes include Satin Chrome, Dark Bronze, Black, White, and Pewter. Solid-brass finishes include Satin Chrome, Polished Brass, Antique Brass, Oil-Rubbed Bronze, Satin Nickel, Dark Bronze, and Pewter. ![Pair of black lever door handles with keyholes facing outward, shown from side and front Images show modern door hardware for entryways.](https://inlinefiberglass.com/wp-content/uploads/2026/06/venice-handle-30-001.png "venice-handle-30-001 - Inline Fiberglass - Inline Fiberglass") ## Venice Lever Handles — 30 mm Plate A slimmer 30 mm backplate for a more compact architectural profile. Zamac finishes include Satin Chrome, Dark Bronze, Black, White, and Pewter. Solid-brass finishes include Satin Chrome, Polished Brass, Antique Brass, Oil-Rubbed Bronze, Satin Nickel, Dark Bronze, and Pewter. ![Torino handle set for Inline Fiberglass entrance doors.](https://inlinefiberglass.com/wp-content/uploads/2026/06/Torino-handle-30-001.png "Torino-handle-30-001 - Inline Fiberglass - Inline Fiberglass") ## Torino Lever Handles — 30 mm Plate A slimmer 30 mm backplate for a more compact architectural profile. Zamac finishes include Satin Chrome, Dark Bronze, Black, White, and Pewter. Solid-brass finishes include Satin Chrome, Polished Brass, Antique Brass, Oil-Rubbed Bronze, Satin Nickel, Dark Bronze, and Pewter. ![Black circular dial with a beige housing and small gray notch, brand says 'tedee' on the face](https://inlinefiberglass.com/wp-content/uploads/2026/06/tedee-smart-001.png "tedee-smart-001 - Inline Fiberglass - Inline Fiberglass") ## Tedee PRO Smart Lock A smart locking system that provides keyless access through the Tedee app, smartwatch, PIN code, voice assistant, or fingerprint-enabled devices. Designed to add convenience, security, and modern access control to compatible door configurations. ![White rounded-square Tedee smart home hub with a small status LED dot in the center.](https://inlinefiberglass.com/wp-content/uploads/2026/06/tedee-smart-bridge-001.png "tedee-smart-bridge-001 - Inline Fiberglass - Inline Fiberglass") ## Tedee Wi-Fi Bridge Connects the Tedee Smart Lock to your home network, enabling remote access, monitoring, and smart-home integration. Allows users to lock, unlock, and manage door access from virtually anywhere. ![Two slim remote controls side by side: one white and one black, each with circular number pads and a central checkmark button.](https://inlinefiberglass.com/wp-content/uploads/2026/06/tedee-remote-001.png "tedee-remote-001 - Inline Fiberglass - Inline Fiberglass") ## Tedee PRO Keypad & Door Sensor The Tedee PRO Keypad supports up to 100 fingerprints and 100 PIN codes for secure keyless entry. The optional Door Sensor monitors whether the door is open or closed and helps prevent automatic locking when the door remains ajar. ## Selection & Finish Note Brochure colours are graphic representations. Review physical samples when precise finish matching matters. Hardware families, materials, backsets, smart-access compatibility, and finishes can vary by door configuration and current supplier availability. [ Visit an Inline Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Why Choose Inline Fiberglass for Your Entrance Door? Inline Fiberglass is focused on fiberglass windows and doors. That matters because the material is not an add-on product line. It is the foundation of our product approach. ### Fiberglass-Focused Product Knowledge Our team guides homeowners, builders, and architects toward the right window and door solutions. ### Design Flexibility The 4500 Series supports multiple door styles, glass layouts, sidelites, transoms, and colour choices to suit a wide range of home designs. ### Energy-Efficient Product Direction Insulated construction helps support year-round energy performance by reducing unwanted heat. ### Residential and Project Support Inline works with homeowners, builders, architects, and dealers, making the product suitable for single-home replacements, renovations, and planned builds. ### Showroom and Quote Support Visitors can Request a Free Quote, call Inline, or visit the Toronto / Etobicoke showroom to discuss options and explore available door configurations. ### Custom Colour and Finish Options Inline offers standard and custom colour options to help homeowners, builders, and designers create an entrance that complements the style and character of the home. ## How to Start Your 4500 Series Door Quote You do not need to know every product detail before reaching out. Tell us about your project, and our team will help you move in the right direction. ## 01 ### Tell Us About Your Project Share your location, door type, timeline, and what you want to change. ## 02 ### Choose Your Door Direction Inline can help you think through style, colour, glass, sidelite, transom, and matching window or patio door options ## 03 ### Get Guidance on the Next Step The team will review your request and help you move toward the right quote, product information, or direct installation path [ Request a Free Quote ](#form) ## Common Questions About 4500 Series Entrance Doors Find clear answers to common questions about fiberglass doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Can 4500 Series entrance doors be customized? Yes. The 4500 Series supports multiple design directions, including modern glass layouts, double doors, plank doors, rail and stile styles, sidelites, and transoms. Custom colour options may also be available depending on project requirements. What colours are available? Standard and custom colour options are available for windows and doors. Inline is an AAMA certified paint applicator. Ask the team to confirm colour availability for your specific entrance door project. Can I add sidelites or a transom? Yes. Sidelites can frame the entrance and bring in more natural light. Transoms can be added above the door to create a taller, brighter entryway. Availability depends on the door configuration and project requirements. Are fiberglass entrance doors energy efficient? The 4500 Series uses insulated fiberglass door panels with a polyurethane core to help support comfort and energy performance. Ask Inline for the applicable NFRC performance information for your door configuration. Final performance details can vary by product configuration, glass package, size, and installation conditions. How long does ordering take? Lead times vary depending on the complexity of the project, including door configuration, colour, glass package, size, and other custom requirements. Inline will confirm current timing during the quote process. What warranty applies to the 4500 Series entrance door? Warranty coverage follows Inline’s existing warranty information. Please review the Warranty page or contact Inline to confirm the coverage that applies to your exact 4500 Series configuration. Does Inline install entrance doors directly? Yes. Inline installs directly and has its own installers for turnkey replacement projects, including removal of existing products and installation of new products tailored to the project. Confirm availability for your location and project type, especially outside Inline’s direct service area. Can I visit a showroom? Yes. Inline’s showroom is located at 30 Constellation Crt, Etobicoke, ON, Canada M9W 1K1. Public showroom hours are Monday–Friday, 8:30am–5:00pm, and Saturdays, 10:00am–2:00pm, except holidays. Can I match my entrance door to Inline windows or sliding patio doors? Yes. This is a strong reason to speak with Inline early. The team can help you review fiberglass windows, entrance doors, sliding patio doors, available glass packages, and colour options together. For entrance doors, ask specifically about double pane for the 4500 Series and triple pane for the 4500C. ## Ready to Upgrade Your Front Entry? Tell us about your entrance door project. Our team will review your request and help you take the next step toward a free quote, product guidance, showroom visit, or direct installation path where available. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Tell Us About Your Door Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Newsletter First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Certifications Testing](https://inlinefiberglass.com/about/certifications-testing/) **Published:** June 19, 2026 **Author:** anthony@webhaven.ca **Content:** # Certified Fiberglass Windows and Doors, Backed by Real Product Data When performance matters, window and door claims need to be clear, verifiable, and tied to the right product. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ Talk to s Specialist ](tel:1-866-566-5656) ## Verified Performance Through Testing and Certification Inline Fiberglass Ltd. manufactures high-performance fiberglass windows and doors for residential, commercial, architectural, and Passive House projects. Our products are supported by technical testing, third-party certification programs, NFRC listings, AAMA ratings, IGMAC-certified glass units, ENERGY STAR options, and product-specific documentation. Whether you are a homeowner comparing energy-efficient windows or a specifier preparing a submittal package, our team can help you find the correct product data for your project. Certifications and ratings can vary by product series, glazing package, size, and configuration. Contact Inline to confirm the correct documentation before specifying or ordering. ![Logo for Passive House Institute: a red stylized P with a yellow abstract shape and the words Passive House Institute.](https://inlinefiberglass.com/wp-content/uploads/2026/07/Passive-house-institute-log-01.jpg "Passive-house-institute-log-01 - Inline Fiberglass - Inline Fiberglass") ## Passive House Certification Our windows and doors are Energy Star certified, ensuring they meet strict energy efficiency guidelines set by the EPA. This certification helps you save on energy bills while contributing to a healthier environment. [ View Details ](https://database.passivehouse.com/en/components/manufacturer/inline-fiberglass-ltd/) ![Phius logo: turquoise circular emblem on the left and the word 'phius' in gray lowercase on the right.](https://inlinefiberglass.com/wp-content/uploads/2026/07/phius-logo-01.jpg "phius-logo-01 - Inline Fiberglass - Inline Fiberglass") ## PHIUS Certification Inline Fiberglass products are certified by PHIUS, guaranteeing that they adhere to the highest performance standards for energy efficiency. This certification reflects our commitment to sustainable building practices and quality craftsmanship. [ View Details ](https://www.phius.org/window-database?_page=1&keywords=inline&_limit=20) ![Energy Star certification logo on blue background, featuring a white star and the word 'Energy' in script above 'ENERGY STAR'.](https://inlinefiberglass.com/wp-content/uploads/2026/07/energy-star-logo-01.jpg "energy-star-logo-01 - Inline Fiberglass - Inline Fiberglass") ## Energy Star Certification Our windows and doors are Energy Star certified, ensuring they meet strict energy efficiency guidelines set by the EPA. This certification helps you save on energy bills while contributing to a healthier environment. [ View Details ](https://natural-resources.canada.ca/energy-efficiency/energy-star/windows-doors-skylights-manufacturers-energy-star-canada-participants) ## Performance Documentation You Can Build Around Choosing windows and doors is not just about style. The right product can affect thermal comfort, energy performance, durability, condensation resistance, project compliance, and long-term value. That is why Inline makes performance information available to homeowners, architects, builders, developers, and commercial project teams. Our goal is to make it easier to compare products, confirm requirements, and move forward with confidence. Inline products include current NFRC listings and AAMA ratings. All Inline products use IGMAC-certified glass units. ENERGY STAR performance is available across all triple-glazed products and select double-glazed products. Inline’s 325 Series, 400 Series, 600 Series, and 3000 Series products can meet ENERGY STAR Most Efficient criteria when configured with triple glazing. ENERGY STAR also applies to all triple-glazed products and select double-glazed products. For Passive House and high-performance projects, select Inline window and door systems have PHIUS certification, and select 3000 Series products are also PHI certified. ## Product Certifications, Ratings & Sustainability Resources ## PHIUS Certified Products PHIUS certification helps identify products suitable for high-performance building projects where energy efficiency, thermal comfort, and envelope performance are major priorities. [ Request PHIUS Product Data ](https://inlinefiberglass.com/resources/technical-spec-download/) ## PHI Certified Products Inline’s PHI-certified products include the 300 Series tilt-and-turn and fixed windows. Contact Inline to request the correct PHI documentation for your project. [ Ask About PHI Certified Products ](https://inlinefiberglass.com/resources/technical-spec-download/) ## NFRC Listings NFRC listings help buyers and project teams compare window and door energy performance using standardized product data. All current Inline products have NFRC listings. NFRC data can help compare energy performance by product and configuration, including metrics such as U-factor, Solar Heat Gain Coefficient, and Visible Transmittance. Exact values should be confirmed using the current product documentation for the selected series, size, and glazing package. If your project requires NFRC documentation, Inline can help identify the correct product listing and supporting information. [ Request NFRC Data ](https://inlinefiberglass.com/resources/technical-spec-download/) ## AAMA Ratings AAMA ratings help show how window and door products perform under standardized testing conditions. All current Inline products have AAMA ratings. AAMA ratings help architects, builders, contractors, and commercial project teams review tested performance before selecting products for residential, commercial, or high-performance projects. For finish-related claims, AAMA coating language should only be used where it applies to applied finishes. AAMA information may be used to review product performance related to structural strength, water resistance, air infiltration, and design pressure, depending on the product and rating. [ Request AAMA Rating Information ](https://inlinefiberglass.com/resources/technical-spec-download/) ## IGMAC-Certified Glass Units The glass unit is a major part of window and door performance. It affects energy efficiency, condensation resistance, comfort, and long-term durability. All Inline products use IGMAC-certified insulating glass units. This supports reliable glass-unit performance across Inline’s fiberglass window and door systems. For projects with specific energy, comfort, or glazing requirements, Inline can help review available glass packages and confirm which configuration is the right fit. [ Ask About Glass Package Options ](https://inlinefiberglass.com/resources/technical-spec-download/) ## ENERGY STAR and ENERGY STAR Most Efficient Inline offers ENERGY STAR performance across select triple-glazed double-glazed products. This makes Inline a strong choice for homeowners and project teams looking for certified fiberglass windows in Canada, energy-efficient fiberglass doors, and high-performance glazing options. Because ENERGY STAR eligibility depends on the product, glass package, and configuration, our team can confirm the correct documentation for your project before you move forward. [ Confirm ENERGY STAR Options ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Environmental Product Declaration Inline’s Environmental Product Declaration (EPD) is available to support architects, builders, developers, and project teams that need transparent product documentation for submittals and sustainability review. The EPD is also commonly used during submittal review for other Inline systems where accepted by the project team. If your project requires EPD documentation, our team can help confirm how the document should be included in your package. [ Download the EPD ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Built for Homeowners, Architects, Builders, and Specifiers Inline manufactures a broad fiberglass product lineup for different project needs. ## For Homeowners Certifications and ratings make it easier to compare window and door options with confidence. If you are replacing old windows, upgrading to triple glazing, or planning a more energy-efficient home, Inline can help you understand which fiberglass products fit your goals. Our team can explain product options, ENERGY STAR availability, glass packages, colours, sizing, and the next step for a quote. Inline installs directly and has its own installers. For replacement projects, Inline can provide a turnkey service that includes removing existing windows and installing new fiberglass windows tailored to the project. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## For Architects and Specifiers Technical documentation helps reduce risk during design, specification, and submittal review. Inline can support your team with product data, certification details, NFRC information, AAMA ratings, PHIUS and PHI documentation where applicable, EPD files, glass package details, and drawings. If you are specifying Passive House windows in Canada, commercial fiberglass windows, or custom fiberglass window systems, our technical team can help confirm which products and documents belong in your package. [ Request a Specifier Package ](#) ## For Builders and Contractors Clear performance documents help your team quote accurately, coordinate project details, and reduce late-stage surprises. Inline supports standard and oversized products, custom sizing, and custom colour options. If your project requires specific ratings, glazing packages, or documentation, our team can help confirm the right product path before the order moves forward. [ Talk to a Product Specialist ](tel:1-866-566-5656) ## For Commercial Projects Commercial and multi-unit projects need reliable documentation before product decisions are made. Inline fiberglass window and door systems can support projects where durability, energy performance, design flexibility, and technical confidence matter. Our team can help with project-specific product guidance, certification documentation, glazing review, and submittal support. [ Commercial Project Support ](#) ## Visit the Inline Showroom Want to review product options in person? Visit Inline Fiberglass Ltd. at our Etobicoke showroom to see fiberglass window and door products, discuss your project, and speak with our team. **Inline Fiberglass Ltd.** 30 Constellation Crt Etobicoke, ON, Canada M9W 1K1 **Showroom Hours** Monday to Friday: 8:30 a.m. – 5:00 p.m. Saturday: 10:00 a.m. – 2:00 p.m. Closed on holidays. [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) [ Contact Inline Today ](https://inlinefiberglass.com/contact/) ## Common Questions About Certifications Find clear answers to common questions about Certifications [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Are all Inline Fiberglass products certified? All current Inline products have NFRC listings and AAMA ratings, and all Inline products use IGMAC-certified glass units. PHIUS, PHI, ENERGY STAR Most Efficient, and EPD documentation apply by product, glazing package, or configuration. Contact Inline to confirm the correct certification documents for your project. If your project depends on a specific certification, contact Inline to confirm the correct product and documentation. Which Inline products are PHIUS certified? Inline’s PHI-certified products include the 3000 Series tilt-and-turn and fixed windows. Which Inline products are PHI certified? Inline’s 3000 Series Tilt & Turn and Fixed Windows are PHI certified. Contact Inline to request the specific product data for your project. Do Inline products have NFRC listings? Yes. All current Inline products have NFRC listings. NFRC information can help with product comparison, energy performance review, and project documentation. Do Inline products have AAMA ratings? Yes. All current Inline products have AAMA ratings available. AAMA ratings help support product review for structural and performance requirements. Are Inline products ENERGY STAR rated? ENERGY STAR applies to all Inline triple-glazed products and select double-glazed products. Inline’s 325 Series, 400 Series, 600 Series, and 3000 Series products can meet ENERGY STAR Most Efficient criteria when configured with triple glazing. Do Inline products use IGMAC-certified glass? Yes. All Inline products use IGMAC-certified insulating glass units. Does Inline have an EPD? Yes. Inline’s EPD is publicly available and should be prominently displayed on the website. The current EPD applies specifically to the 300 Series fixed windows and 325 Series casement, awning, and fixed windows. It may also be accepted for other Inline systems during submittal review, depending on project requirements. Can I download technical documents without filling out a form? Yes. Technical downloads should be public and easy to access. For project-specific questions, product selection, or submittal support, you can also contact Inline directly. Can Inline help with custom sizes and colours? Yes. Inline offers standard and oversized products, custom sizing, and custom colour options. For applied finishes, AAMA coating applies by specification. Contact Inline to confirm finish options and project requirements. Does Inline install directly? Yes. Inline installs directly. If your project has specific installation, service, or warranty questions, our team can help route you to the right next step. ## Need Certified Product Data for Your Project? Tell us what product or project you are reviewing. Our team will help identify the relevant certification, testing, and technical documents. Contact form general Updates First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town I'm interested in: - Select -QuoteShowroom visitSalesServiceSpecsDealer partnershipGeneral questionOther Project notes I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Fiberglass Window Replacement](https://inlinefiberglass.com/services/fiberglass-window-replacement/) **Published:** June 18, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Window Replacement in Toronto Whether you are replacing windows in a home, planning a custom build, specifying products for a commercial project, or looking for support on an existing Inline product, this page will help you find the right service path. [ Request a Free Quote ](#form) [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Fiberglass Window Replacement for Toronto Homes Replace old, drafty, or hard-to-operate windows with premium fiberglass windows designed for long-term comfort, durability, and clean design. Inline Fiberglass helps homeowners choose the right replacement fiberglass windows for their home, project goals, and budget. Whether you are upgrading a few windows or planning a larger home renovation, our team can help you compare styles, glass options, colours, and next steps. [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Better Windows Start with the Right Material Window replacement is not just about removing old windows and putting in new ones. The right replacement window should help improve comfort, reduce drafts, support energy efficiency, and fit the look of your home. Fiberglass is a strong choice for homeowners who want replacement windows built for long-term performance. Unlike standard replacement-window options that may focus mainly on price, Inline fiberglass windows are designed around strength, stability, thermal performance, and design flexibility. If your current windows are drafty, outdated, difficult to open, or no longer matching the quality of your home, fiberglass window replacement may be the right next step. ## Why Choose Inline for Replacement Fiberglass Windows? Inline is not a general window company that treats fiberglass as one product among many. Fiberglass is the material the company is built around. That focus helps Inline support homeowners with clear product guidance, strong window options, and replacement solutions designed for lasting performance. ## What Sets Inline Apart ## Fiberglass-focused manufacturing Inline specializes in fiberglass windows and doors, with product knowledge built around the strengths of fiberglass. ## Built for long-term performance Fiberglass window frames are designed to support strength, durability, and dimensional stability through changing Canadian seasons. ## Energy-efficient window options Choose from glass and window configurations that can help support comfort and energy performance based on your project needs. ## Design flexibility Select from multiple window styles, colours, grille options, glass packages, and hardware choices. ## Showroom support Visit the Toronto / Etobicoke showroom to see product options, finishes, and window details in person. ## Our Fiberglass Window Replacement Process A clear path for our replacement process ## 1. Tell Us About Your Project Start by sharing a few details about your home, location, window needs, timeline, and goals. You do not need to know every technical detail before reaching out. ## 2. Get Product Guidance Inline will help you understand which fiberglass window styles may fit your home, including casement, awning, fixed, slider, single hung, double hung, tilt & turn, and other product options. ## 3. Review Styles, Glass, Colours, and Options Choose the window type, finish, grille style, glass package, and performance level that makes sense for your home and budget. ## 4. Confirm Measurements and Project Details Accurate project details help support a better quote. Depending on your project path, this may include measurements, photos, plans, or a showroom consultation. ## 5. Manufacturing and Project Coordination Inline manufactures fiberglass windows with attention to product consistency, finish, and long-term performance. For replacement projects in Inline’s direct service area, Inline installs directly using its own installers and offers a turnkey replacement service that removes existing windows and installs new products tailored to the project. ## 6. Support After the Quote The goal is to make the next step clear. Inline can help route your request to the right sales, showroom, dealer, product, or service path. ## Replacement Window Styles Available Inline offers a range of fiberglass window styles for different home designs and room needs. ![Inline Fiberglass 300 Series tilt-turn fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/300SERIESOPEN_vector-1920w-1024x1024.webp "300+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## Tilt & Turn Windows A flexible, high-performance option for homeowners who want secure ventilation, easy cleaning, and modern operation. [**Explore 300 Series Tilt & Turn Windows**](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## Casement Windows A strong option for bedrooms, kitchens, living rooms, and areas where ventilation and a tight seal matter. [**Explore 325 Series Casement Windows**](https://inlinefiberglass.com/products/fiberglass-windows/325-series-casement/) ![Inline Fiberglass 325 Series fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIES_vector1-1920w-fixed-1024x1024.webp "325+SERIES_vector+(1)-1920w - fixed - Inline Fiberglass - Inline Fiberglass") ## Fixed Windows Ideal for large views, natural light, and areas where ventilation is not needed. [**Explore Fixed Fiberglass Windows**](https://inlinefiberglass.com/products/fiberglass-windows/) ![Inline Fiberglass 325 Series awning fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESAWNINGOPEN_vector-1920w-awening-1024x1024.webp "325+SERIES+AWNING+OPEN_vector-1920w-awening - Inline Fiberglass - Inline Fiberglass") ## Awning Windows A practical choice for ventilation, including spaces where you want airflow even during light rain. [**Explore 325 Series Awning Windows**](https://inlinefiberglass.com/products/fiberglass-windows/325-series-awning/) ![Inline Fiberglass 800 Series horizontal slider fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/800SERIESOPEN_vector-1920w-1024x1024.webp "800+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## Horizontal Slider Windows A space-saving option for rooms where outward-opening windows may not be ideal. [**Explore 800 Series Horizontal Slider Windows**](https://inlinefiberglass.com/products/fiberglass-windows/800-series-horizontal-slider/) ![Inline Fiberglass 900 Series double-hung fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/900SERIES_vectorarrow-1920w-1024x1024.webp "900+SERIES_vector+arrow-1920w - Inline Fiberglass - Inline Fiberglass") ## Single Hung and Double Hung Windows Traditional window styles for homeowners who want familiar operation with fiberglass performance. **[850 Series Single Hung Windows](https://inlinefiberglass.com/products/fiberglass-windows/850-series-single-hung/) [900 Series Double Hung Windows](https://inlinefiberglass.com/products/fiberglass-windows/900-series-double-hung/)** ## Replacement Windows That Fit the Look of Your Home Your replacement windows should not feel like an afterthought. Inline can help you choose options that match your home’s design and performance needs. Available options may include: - Double or triple pane glass options - Low-E glass packages - Standard and custom colour options - Interior and exterior finish choices - Grille styles - Hardware options - Window styles for modern, traditional, and custom homes [ View Window Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) [ Talk to a Specialist ](tel:1-866-566-5656) ## Fiberglass Window Replacement in Toronto and the GTA Inline supports homeowners looking for fiberglass window replacement across the GTHA and within Ontario, including service east to Kingston/Ottawa, north to Sudbury, and west to London. Homeowners can start with a quote request, call the Inline team, or visit the Toronto / Etobicoke showroom to better understand product options before making a decision. Service areas may include the GTHA, Toronto, Etobicoke, Mississauga, Vaughan, Markham, Richmond Hill, North York, Oakville, Kingston, Ottawa, Sudbury, London, and other Ontario communities within Inline’s confirmed service range. Service availability should be confirmed with Inline for each project, especially for locations near the edge of the service area. ## What Inline Homeowners Are Saying The installation team from Inline Fiberglass did a fantastic job. Slava and his team completed the installation to perfection and were professional, courteous, and efficient throughout the entire process. They were great to work with, took pride in their workmanship, and paid close attention to every detail. The finished result exceeded my expectations, and I would highly recommend them for any window project. Thanks again to the Inline Fiberglass team — job well done. jim moulitzi I recently purchased a patio door from Inline Fiberglass and was extremely pleased with the experience. A friend had previously purchased windows from Inline and spoke highly of both the products and the service, so I decided to give them a call. The quality of the door is excellent, and the staff were knowledgeable and helpful throughout the process. I was especially impressed with Thomas Hong’s experience and guidance. I would highly recommend Inline Fiberglass. Jim Malcolm We received exceptional service from the entire team. Dmitry provided honest, practical advice without the typical sales pitch. The installers—Slava, Joe, and Max—demonstrated excellent problem-solving skills when addressing my damaged siding and delivered high-quality results at a fair price. Their attention to detail with the flashing and sealing was exceptional, requiring no follow-up corrections. Overall, it was a top-tier experience. Damian Murawiecki We had a fantastic experience with Inline! Our sales representative, Samantha, was incredibly knowledgeable. The installation team, led by Slava and Igor, was efficient, professional and respectful of our property. They covered all surfaces, communicated progress and issues clearly, and left the space spotless. Now, all that’s left to do is paint the new trim! Overall, it was an extremely positive installation experience. The doors and hardware look amazing! Vera Rumyantseva [ View More Inline Reviews ](https://www.google.com/search?q=inline+fiberlgass+windows&sca_esv=bcc915fd4b92abab&sxsrf=ANbL-n4DWu3wLXo4wmEvGzE35QJvGpXdCQ%3A1781021312308&ei=gDooapvEEuC_ruEPrvH22Ak&biw=1728&bih=992&ved=0ahUKEwibhKG1xfqUAxXgnysGHa64HZsQ4dUDCBA&uact=5&oq=inline+fiberlgass+windows&gs_lp=Egxnd3Mtd2l6LXNlcnAiGWlubGluZSBmaWJlcmxnYXNzIHdpbmRvd3MyBxAAGIAEGA0yBxAAGIAEGA0yBxAAGIAEGA0yBhAAGB4YDTILEAAYgAQYigUYhgMyCxAAGIAEGIoFGIYDMggQABiJBRiiBDIIEAAYiQUYogQyCBAAGIAEGKIESO4NUOgGWLYMcAF4AZABAJgBeqABuwWqAQMyLjW4AQPIAQD4AQGYAgWgAosDwgIKEAAYRxjWBBiwA8ICDRAAGIAEGIoFGEMYsAPCAhcQLhjcBhi4BhjaBhjYAhjIAxiwA9gBAcICBxAjGLACGCeYAwDiAwUSATEgQIgGAZAGFLoGBggBEAEYGZIHAzMuMqAH_jyyBwMyLjK4B4UDwgcFMC4xLjTIBxKACAE&sclient=gws-wiz-serp#lrd=0x882b3985b8b54fdb:0xc3ecfea8b8e61d79,1,,,,) ## Ready to Replace Your Windows? Tell us about your home, your current windows, and what you want to improve. Inline will review your request and help you take the next step toward the right fiberglass replacement windows. [ Book Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Fiberglass Window Replacement Find clear answers to common questions about Fiberglass Window Replacement. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) How much does fiberglass window replacement cost? The cost depends on the number of windows, window style, size, glass package, colour options, installation requirements, and project complexity. The best next step is to request a quote with your project details. Are fiberglass windows worth it for replacement projects? Fiberglass windows are often a strong fit for homeowners who want durability, comfort, energy efficiency, and long-term value. They are especially worth considering when you want a higher-performance alternative to basic replacement-window options. Do you replace windows in Toronto homes? Inline supports homeowners in Toronto and surrounding areas. The exact quote, showroom, dealer, or installation path should be confirmed based on your project location and needs. Does Inline install the windows directly? Yes. Inline installs directly using its own installers and offers a turnkey replacement service that removes existing windows and installs new products tailored to the project. Service availability should still be confirmed based on your project location. How long does a window replacement project take? Lead times vary depending on the complexity of the project. Inline can provide more realistic timing after reviewing your window styles, quantities, options, customization needs, and project location. Can I replace only a few windows? Yes, many homeowners start with a smaller replacement project. You can request a quote for a few windows, a full-home replacement, or a larger renovation. Can fiberglass windows help with drafts and comfort? New fiberglass windows can help support better comfort when the right product, glass package, and installation approach are used. Inline can help you choose options suited to your home and performance goals. Are there energy-efficiency rebates or grants available? Programs change over time and may depend on your location, product selection, installer, and energy audit requirements. Inline can help provide relevant product information for your window selection, but final rebate or grant eligibility should be confirmed through the current program provider. Can I choose black or custom-colour fiberglass windows? Yes, colour options may be available depending on the product and finish requirements. Inline can help confirm standard and custom colour options for your project. Can I visit a showroom before requesting a quote? Yes. Visiting the showroom can help you compare window styles, frame details, glass options, colours, and hardware before making a decision. ## Request a Free Window Replacement Quote Tell us about your window replacement project. Our team will review your request and contact you with the next step. Request a quote Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Custom Fiberglass Windows](https://inlinefiberglass.com/services/custom-fiberglass-windows/) **Published:** June 18, 2026 **Author:** anthony@webhaven.ca **Content:** # Custom Fiberglass Windows Built Around Your Project Not every project fits a standard window. Inline Fiberglass helps homeowners, builders, architects, and commercial teams plan custom fiberglass windows projects. [ View Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Built For Projects That Need More Than Off-The-Shelf Windows Choose from fiberglass window options for standard and oversized products, custom shapes reviewed during quoting, black or custom colour finishes, SDLs/grilles, Cardinal glass, double or triple pane configurations, and product series suited to your project goals. Whether you are upgrading a home, designing a custom build, replacing oversized windows, or planning a high-performance project, Inline can help you review the right fiberglass window path before you commit. [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) [ Request a Free Quote ](#form) ## Custom Windows Need Product Knowledge, Not Guesswork A custom window has to fit the opening, support the glass package, match the design intent, and perform over time. Inlines focus helps the team guide custom projects with practical product knowledge, technical documents, colour options, and window series recommendations. ## Why customers choose Inline for custom fiberglass windows ## Fiberglass-focused product expertise Inline is built around fiberglass windows and doors, not a mixed catalogue of unrelated materials. ## Custom size and configuration support Review project-specific sizing, window type, glass requirements, and design goals before moving forward. ## Colour and finish options Explore standard and custom colour paths, including black fiberglass windows and dark frame options where suitable for the project. ## Large window planning Discuss fixed, strip, operating, and combination window options for larger openings and modern designs. ## Technical support when needed Architects, builders, and commercial buyers can request product details, drawings, and specification support. ## Project photos and showroom support Use real examples, product samples, and showroom guidance to make decisions with more confidence. ## What Can Be Customized? Custom fiberglass windows should be planned around both design and performance. Inline can help you review the right combination of size, window series, glass, colour, grilles, and documentation. ## Custom Window Sizes and Shapes Inline offers both standard and oversized fiberglass window products. Final sizing should be confirmed during quoting based on the selected window series, opening requirements, glass package, configuration, and project conditions. Custom shapes can also be reviewed, including shapes such as triangles and circles. **This is useful for:** - Renovations with non-standard window openings - Custom homes - Large replacement windows - Architect-designed openings - Commercial and light commercial projects - High-performance building projects [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Large Fiberglass Windows Large fiberglass windows can help bring more natural light into a home or building while supporting clean, modern sightlines. For larger openings, the right product choice matters. Fixed windows, strip windows, casement combinations, and other window series can be reviewed depending on the design, size, glass, and performance needs. **Inline can help you review:** - Opening size - Fixed vs. operable sections - A dated rear-yard or deck access door - Glass package - Frame colour - Sightline goals - Project documentation - Product series fit [ Talk to a Specialist ](tel:1-866-566-5656) ## Black Fiberglass Windows Black fiberglass windows are a popular choice for modern homes, custom builds, and commercial projects. They can create strong contrast, clean exterior lines, and a more architectural look. Inline can help you review black or dark finish options based on: - Interior and exterior colour needs - Project style - Product series - Warranty considerations - Lead time and pricing considerations Tricorn Black and Iron Ore are semi-standard colour options. Other black or dark colour requests should be confirmed during the quote process. [ Explore Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## Glass Packages The right glass package affects comfort, energy performance, condensation resistance, sound control, and overall project value. Inline uses Cardinal glass and can review double or triple pane configurations based on the product series and project needs. Possible considerations include: - Cardinal glass - Double or triple pane configurations - Low-E coating options - Energy performance goals - Solar heat gain - Sound control For technical projects, ask Inline to confirm the right product data and documentation before specifying. [ Explore Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## Grilles and Design Details Grilles can change the look of a window dramatically. They may be used for traditional homes, heritage-inspired designs, modern grid layouts, or custom architectural detailing. Inline can review grilles and SDLs for custom window projects. SDLs are the preferred design-detail option to discuss during product selection. Common considerations include: - Interior design style - Exterior elevation - Window size - Glass type - Cleaning and maintenance expectations - Matching other windows or doors [ View Grille and SDL Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) ## Product Series Selection Different window types solve different problems. Inline can help match your project to the right fiberglass window series. Options may include: - Tilt & turn windows - Casement windows - Awning windows - Fixed windows - Strip windows - Horizontal sliders - Single hung windows - Double hung windows The right choice depends on ventilation, sightlines, opening size, cleaning access, energy goals, and desired look. [ Compare Window Series ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## How the Custom Window Process Works A Clear Path From Inquiry to Project Support ## 1. Tell us about your project Start with your project location, window needs, rough sizes, photos, plans, or drawings if available. You do not need to have every detail ready. ## 2. Inline reviews the best product path The team reviews your goals and helps identify the right window type, product series, glass package, colour path, and documentation. ## 3. Confirm design and performance details Review key decisions such as size, custom shape feasibility, frame colour, black finish options, custom colour needs, SDLs/grilles, Cardinal glass, double or triple pane configuration, and whether specs or drawings are required. ## 4. Request a Free Quote Once the main details are clear, Inline can prepare the next step for your custom fiberglass window quote. ## 5. Move forward with confidence After your quote request is reviewed, Inline will help clarify the next step based on your project type, location, product requirements, and support path. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Custom Fiberglass Windows for Homes, Builds, and Commercial Projects Inline’s custom fiberglass window service is a strong fit when standard windows do not match the project. ## For Homeowners Custom windows can help with premium renovations, large replacements, black frame upgrades, energy-efficient improvements, and design-led home projects. **Common needs:** - Replacing old non-standard windows - Improving comfort - Updating the look of the home - Matching existing openings - Choosing black or custom colour frames - Planning larger windows for more light [ Start a Home Window Quote ](https://inlinefiberglass.com/request-a-quote/) ## For Builders and Contractors Builders need clear product guidance, sizing support, documentation, and coordination. Inline can help review the right product path before the project moves too far forward. **Common needs:** - Custom sizes - Product series recommendations - Quote support - Finish options - Drawings or product details - Lead-time discussion - Project coordination [ Request Builder Support ](https://inlinefiberglass.com/contact/) ## For Architects and Specifiers Custom projects often need more than product photos. Architects may need drawings, technical data, performance details, and product-specific documentation. **Common needs:** - Window series selection - Product specs - Drawings - Glass package review - Custom sizing guidance - High-performance product details - Finish coordination [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## For Commercial and High-Performance Projects Custom fiberglass windows may support commercial, institutional, multi-unit, or high-performance project goals when the correct products and documentation are selected. **Common needs:** - Larger openings - Fixed or strip window systems - Performance documentation - Commercial project coordination - Colour matching - Long-term durability - Technical support [ Request Project Support ](https://inlinefiberglass.com/contact/) ## Planning Custom Windows? Send Inline your project details, rough sizes, drawings, photos, or design goals. The team will help you understand the right fiberglass window options and next steps. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Common Questions About Custom Fiberglass Windows Find clear answers to common questions about Inlines Custom Fiberglass Windows. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Can fiberglass windows be custom sized? Yes, custom sizing can be reviewed for your project. Exact limits depend on the window series, opening size, glass package, configuration, and project requirements. Can I get black fiberglass windows? Black fiberglass windows can be reviewed as part of your colour and finish selection. Dark finishes should be confirmed during the quote process so the right product, finish, and project expectations are clear. Do you offer custom colour windows? White is Inline’s standard colour. Commercial Brown, Almond, Brownstone, Slate, Tricorn Black, and Iron Ore are semi-standard colours. Other colours can be reviewed as custom colour requests. Can I order large fiberglass windows? Large fiberglass windows may be available depending on the window type, glass package, configuration, and project requirements. Inline can help determine whether fixed, strip, combination, or operable window options are the right fit. What glass options are available? Glass options depend on the product series and project goals. Inline uses Cardinal glass and can review double or triple pane configurations, Low-E coating options, comfort, energy performance, sound control, visible light, and project-specific requirements. Are grilles available for custom windows? Grille options can be reviewed during the design process. The right grille style depends on the window type, glass package, design intent, and maintenance preferences. How long do custom fiberglass windows take? Lead times vary based on product series, size, glass, finish, custom colour requirements, order volume, and project details. Request a Free Quote to confirm timing for your specific project. Do you provide drawings or product specs? Yes, architects, builders, and project teams can request product information and technical documents where available. Certification and performance details should be confirmed by product and project requirement. Does Inline install custom windows? Inline installs directly and has its own installers. Inline offers a turnkey replacement service that can remove existing windows and install new products tailored to the project needs. Confirm any region-specific dealer or contractor exceptions during the quote process. Can I visit a showroom before choosing? Yes. Inline’s showroom is open to the public at 30 Constellation Crt, Etobicoke, ON, Canada M9W 1K1. Current public hours are Monday–Friday, 8:30am–5:00pm, and Saturdays, 10:00am–2:00pm, except holidays. A showroom visit can help you review products, colour samples, frame details, and design options before moving forward with a quote. ## Start Your Custom Fiberglass Window Project Looking for custom fiberglass windows for a home, renovation, custom build, or commercial project? Send Inline your project details and the team will help you review the right size, style, colour, glass, and product path. Request a quote Updates First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [850 Series Single Hung](https://inlinefiberglass.com/products/fiberglass-windows/850-series-single-hung/) **Published:** June 8, 2026 **Author:** anthony@webhaven.ca **Content:** # 850 Series Single Hung Fiberglass Windows Space-saving fiberglass single hung windows with traditional style and modern performance [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 850 Series single-hung fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/850SERIES_vectorarrow-1920w-2-1024x1024.webp "850+SERIES_vector+arrow-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## Fiberglass Single Hung Windows Built for Everyday Living The Inline Fiberglass 850 Series Single Hung Window is designed for projects that need a clean, traditional window style without requiring exterior swing space. The bottom sash slides upward for ventilation while the top sash remains fixed, making this series a strong fit for bedrooms, upper floors, walkways, porches, tight side yards, and homes where outward-opening windows may not be practical. Built with Inline’s fiberglass window system, the 850 Series supports long-term strength, energy efficiency, and design flexibility for residential, renovation, custom home, and select light commercial applications. [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## Traditional operation. Fiberglass performance. Single hung windows are a familiar choice for homes, but the material matters. The 850 Series brings the practical operation of a vertical sliding window together with the strength and stability of fiberglass. **Key benefits:** - Bottom sash slides upward for simple ventilation - Fixed top sash helps preserve a clean, traditional look - Space-saving operation for tight exterior areas - Available with double pane glass options - Custom colour options available for interior and exterior finishes - Designed for energy efficiency, durability, and everyday use - Technical drawings and installation documents for project planning [ Request a Free Quote ](#form) ## Performance you can specify with confidence The 850 Series is built for projects where ordinary window performance is not enough. Its fiberglass construction helps support structural stability, thermal performance, and reliable operation through changing Canadian weather conditions. **Specifier note:** Performance values, glass packages, and certification scope should be confirmed for the exact size, configuration, climate zone, and project requirements. **Performance highlights:** - AAMA H-R 65 / Design Pressure 65 rating - Tested to withstand wind-load pressures up to 314 kph / 195 mph - Standard 20mm Low-E argon-filled IGU configuration noted in product data - Reported total window U-value range of 0.35 to 0.56, depending on window size and configuration - Double pane glass options available - IGMAC-certified insulating glass units available through Inline [ Download Product Specs ](#product-specs) ## Best uses for the 850 Series The 850 Series is a practical fit when the project calls for a classic vertical window with modern fiberglass benefits. ### Residential renovations Use the 850 Series where homeowners want a familiar window style with better long-term material performance, energy efficiency, and finish options. ### Bedrooms and upper floors The vertical sliding operation makes the 850 Series easy to use in rooms where a traditional window style is preferred. ### Walkways, porches, and tight lots Because the sash slides vertically, the window does not project outward into paths, decks, side yards, or exterior traffic areas. ### Custom homes and new builds The 850 Series works well when the design calls for clean sightlines, custom colour choices, decorative grille options, and energy-efficient glass. ### Builder and light commercial projects For product documentation, consistent manufacturing, and practical window operation, Inline can help determine whether the 850 Series is the right fit. ### Energy-Conscious Upgrades For homeowners replacing older windows, the 850 Series offers access to modern glass options, helping support comfort and energy-efficiency goals. ## Customize the 850 Series for Your Project The 850 Series can be tailored to suit the performance, appearance, and documentation needs of your project. ## 01 ### Glass Options Double and triple pane glass options are available. Inline also offers IGMAC-certified insulating glass units to support performance and durability. [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## 02 ### Colour Options Choose from standard colours or request a custom colour match. Inline’s fiberglass windows can be finished in light or dark colours for interior and exterior design needs. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## 03 ### Grilles and Design Grilles can change the entire character of a window. They can make a new window feel more traditional, more architectural, or more consistent with a home. [ View Grille and SDL Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/window-grilles-and-sdl-bars/) ## See the 850 Series in Real Spaces Explore how the 850 Series is used across homes and projects where ventilation, comfort, and clean architectural design are priorities. ## 850 Series Drawings and Installation Resources Planning a project? Access available 850 Series technical documents to help with product review, specification, and installation planning. ### 850 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/850_Seriers_Product_Drawings.pdf) ### 850 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/850v3-2004.zip) ### Installation Guide Review installation information for single 850 Series units. [**Download Single Unit Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/850inst.pdf) For project-specific performance data, certification documentation, or glass package confirmation, contact Inline Fiberglass before final specification. ## Common Questions About 850 Series Single Hung Window Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where is the 850 Series Single Hung Window best used? The 850 Series is best used in homes and projects that need a traditional vertical window style with space-saving operation. It is especially useful near walkways, porches, tight exterior areas, bedrooms, upper floors, and places where an outward-opening sash may not be ideal. How does a single hung window operate? A single hung window has one operable sash and one fixed sash. On the 850 Series, the bottom sash slides upward to provide ventilation while the top sash remains fixed. Is the 850 Series available in custom colours? Yes. Inline offers standard and custom colour options for fiberglass windows and doors, including colour matching. Confirm available colours, finish details, and lead-time implications with the Inline team before finalizing your order. Can decorative grilles be added? Yes. Decorative grille options can be considered for the 850 Series. The fixed upper sash and half-screen configuration can help grille details remain visible and clean. Can the 850 Series be used in commercial projects? It may be suitable for select commercial, multi-unit, or light commercial applications depending on the project requirements. For larger commercial work, performance targets, drawings, product data, and installation details should be reviewed with Inline’s technical team. Is the 850 Series Passive House or PHIUS certified? Do not assume certification without product-specific documentation. Inline has high-performance product options, but certification scope can vary by product, configuration, and glass package. Ask Inline for current certification documents and performance data for your project. What documents are available for the 850 Series? The 850 Series page above includes links for drawings, CAD files, and installation information. Architects, builders, and project teams should request the latest technical documents directly from Inline before using them for specification or construction planning. How do I request a quote? Use the quote form and include your project location, window quantities, rough sizes, preferred style, colour, glass needs, and timeline. If you have drawings, photos, or plans, upload them so the team can review your request more efficiently. ## Ready to Plan Your 850 Series Window Project? Tell us about your project and our team will help you take the next step. Whether you are replacing windows, planning a custom home, preparing architectural drawings, or reviewing options for a commercial project, Inline Fiberglass can help you confirm the right product path. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Tell Us About Your Window Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Notify First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [800 Series Horizontal Slider](https://inlinefiberglass.com/products/fiberglass-windows/800-series-horizontal-slider/) **Published:** June 8, 2026 **Author:** anthony@webhaven.ca **Content:** # 800 Series Horizontal Slider Fiberglass Windows Smooth sliding operation. Strong fiberglass construction. Built for wide openings where space matters. [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 800 Series horizontal slider fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/800SERIESOPEN_vector-1920w-1024x1024.webp "800+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## Fiberglass Sliding Windows Built for Smooth Operation Inline Fiberglass 800 Series horizontal slider windows are designed for projects that need practical ventilation, clean sightlines, and reliable long-term performance. The sliding sash moves horizontally, making this series a strong fit for rooms where outward or inward-swinging windows are not ideal. Built with rigid pultruded fiberglass frames, the 800 Series helps reduce the frame deflection that can affect wide sliding windows. The result is a durable, energy-efficient slider window system designed for homes, multi-unit buildings, commercial spaces, and custom projects. [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## Where the 800 Series Works Best The 800 Series is a practical choice when you want ventilation without a sash projecting inward or outward. **It is especially useful for:** - Bedrooms and Basements - Multi-unit residential buildings - Tight exterior spaces - Walkways, decks, and patios - Commercial or institutional projects - Wide openings where structural stability matters - Projects needing custom colour and glass options Because the sash slides horizontally, the 800 Series is easy to operate in spaces where a casement, awning, or tilt-and-turn window may not be the best fit. [ Request a Free Quote ](#form) ## Built to Improve What Standard Slider Windows Often Struggle With Horizontal slider windows are a practical solution for many projects, and the 800 Series is built to deliver dependable long-term performance. With rigid pultruded fiberglass frames and an 82.5 mm (3-1/4″) frame depth, it helps support smooth operation, structural stability, and clean sightlines. ### AAMA H-R 85 Rated Tested for demanding structural performance in a horizontal rolling window configuration. ### CSA A440 Performance Ratings Rated A3, B7, and C5 for air tightness, water penetration resistance, and structural performance. ### Pressure Equalized Rain Screen The frame design helps manage water infiltration and directs incidental moisture toward the exterior. ### Smooth Sliding Hardware Molded acetal riding blocks and extruded PVC bumpers support consistent sash movement. ### Heavy-Duty Locking Hardware Available with heavy-duty single or dual die-cast cam locks that engage into structural keepers. ### IGMAC-Certified Glass Available with IGMAC-certified double pane insulating glass units to suit project requirements. [ Download Product Specs ](#product-specs) [ Request a Free Quote ](#form) ## Why Choose Fiberglass Horizontal Slider Windows? The 325 Series combines fiberglass construction, premium hardware, energy-efficient glass options, and flexible finish choices for a wide range of residential and commercial projects. ### Space-Saving Operation The sash slides side-to-side instead of swinging open. That makes the 800 Series a smart option near patios, pathways, landscaping, furniture, or interior spaces where clearance is limited. ### Stronger Frame Stability Fiberglass is a strong, dimensionally stable material. For wider slider windows, that matters. The 800 Series is designed to help reduce deflection, support smooth operation, and maintain a better seal over time. ### Better Comfort and Energy Performance The 800 Series supports double pane glass packages, allowing homeowners, builders, and specifiers to choose a glass configuration that fits the project’s energy goals. ### Clean Sightlines and Practical Ventilation Slider windows provide straightforward ventilation with a simple, familiar operating style. They are ideal for rooms that need fresh air, natural light, and easy daily use. ### Custom Colours and Finish Options Inline offers a broad range of interior and exterior colour choices, including custom colour matching. The existing 800 Series page also notes that Inline is an AAMA certified paint applicator. ### Built for Long-Term Value Durability of pultruded fiberglass with proven hardware and flexible glass options to create a window system designed for dependable performance, low maintenance, and lasting value ## Customize the 800 Series for Your Project The 800 Series can be tailored to suit the performance, appearance, and documentation needs of your project. ## 01 ### Glass Options Double and triple pane glass options are available. Inline also offers IGMAC-certified insulating glass units to support performance and durability. [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## 02 ### Colour Options Choose from standard colours or request a custom colour match. Inline’s fiberglass windows can be finished in light or dark colours for interior and exterior design needs. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## 03 ### Grilles and Design Grilles can change the entire character of a window. They can make a new window feel more traditional, more architectural, or more consistent with a home. [ View Grille and SDL Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/window-grilles-and-sdl-bars/) ## Product Support for Architects, Builders, and Commercial Teams The 800 Series is built for more than basic residential replacement. It can support projects where sliding operation, fiberglass frame strength, thermal performance, and technical documentation all matter. Use this series when your project needs: - A horizontal sliding window format - Strong tested performance and fiberglass frame stability - Double pane glass options - Custom sizing or project-fit guidance - Product drawings or technical support [ Talk to a Specialist ](tel:1-866-566-5656) ## See the 800 Series in Real Spaces See how the 800 Series windows look in finished rooms, bedrooms, and modern spaces. ## 800 Series Drawings and Installation Resources Planning a project? Access available 300 Series technical documents to help with product review, specification, and installation planning. ### 800 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/800_Series_Product_Drawings.pdf) ### 800 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/800v3-2004.zip) ### Installation Guide Review installation information for single 800 Series units. [**Download Single Unit Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/800inst.pdf) For project-specific performance data, certification documentation, or glass package confirmation, contact Inline Fiberglass before final specification. ## Common Questions About 800 Series Horizontal Slider Windows Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where is the 800 Series best used? The 800 Series is best used where you want a space-saving window that slides open horizontally. Common applications include bedrooms, basements, multi-unit buildings, walkways, patios, and other areas where a swinging sash may not be ideal. Are 800 Series slider windows energy efficient? Yes, the 800 Series is designed as a high-performance fiberglass window system and can be configured with double or triple pane glass options. The right glass package depends on your project goals, location, and performance requirements. Is the 800 Series available in custom colours? Yes. Inline offers a wide range of colour choices, including custom colour matching for specific project needs. Inline also offers AAMA certified paint application. Can 800 Series horizontal slider windows be used in commercial projects? Yes, the 800 Series can be considered for residential, multi-unit, and commercial applications where a horizontal slider format is the right fit. Commercial teams should request product specs and confirm performance requirements with Inline before final selection. What performance ratings apply to the 800 Series? Project source material lists the 800 Series as achieving an AAMA H-R 85 rating and CSA A440 ratings of A3, B7, C5. Confirm current test documents and configuration-specific data with Inline before specification. Does Inline provide drawings or installation information? Yes. This 800 Series page links to drawings in PDF format, CAD drawings, and installation information. ## Ready to Plan Your 800 Series Window Project? Tell us about your project and our team will help you take the next step. Whether you are replacing windows, planning a custom home, preparing architectural drawings, or reviewing options for a commercial project, Inline Fiberglass can help you confirm the right product path. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Tell Us About Your Window Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Subscribe First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [700 Series Casement Hopper](https://inlinefiberglass.com/products/fiberglass-windows/700-series-casement-hopper/) **Published:** June 6, 2026 **Author:** anthony@webhaven.ca **Content:** # 700 Series Casement / Hopper Fiberglass Windows Designed for projects that need ventilation, clean exterior sightlines, and safe interior access. [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## Engineered for In-Swing Performance and Space-Conscious Applications Available in in-swing casement, hopper, and fixed configurations, this fiberglass window series is a strong fit for high-rise, urban, residential, commercial, and tight-clearance applications where outward-swinging windows may not be practical. Built with strong fiberglass frames, project-ready glass options, and custom colour flexibility, the 700 Series helps architects, builders, and homeowners choose a window system that supports comfort, durability, and long-term performance. [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## Key Features of the 700 Series The 700 Series is available in in-swing casement, hopper, and fixed configurations. Its inward-opening design can simplify cleaning and maintenance access, while durable fiberglass frames support long-term performance. Available double and triple pane glass options, custom colour finishes, and technical documentation provide flexibility for a wide range of residential and commercial projects. **Best fit for:** - High-rise residential buildings - Urban and multi-unit developments - Commercial and institutional projects - Tight-clearance installations - Buildings requiring interior cleaning access [ Request a Free Quote ](#form) ## Built for Demanding Window Applications The 700 Series is not a generic operable window. It is built for projects where frame strength, controlled operation, and reliable sealing matter. ## In-swing Operation The sash opens inward, making the 700 Series useful for upper floors, high-rise conditions, urban buildings, and spaces where exterior clearance is limited. ## Fiberglass Frame Strength The 700 Series uses fiberglass frames with a 60 mm frame depth and 2.3 mm wall thickness, supporting structural stability across demanding applications. ## Insulated Frame Design The open-back frame perimeter is filled with high-density insulation during manufacturing to support thermal performance. ## Hardware Built for Repeated Use Heavy-duty concealed stainless steel hinges and metal cam-locks are secured through the fiberglass frame into patented reinforcements. ## Added Support for Taller Units Operable units over 48 inches in height can include a compression interlock to help maintain a positive seal under challenging wind pressure conditions. ## Tested Performance References Reported ratings include AAMA AP-C 65 and CSA A440 A3, B6, C4. Confirm current product documentation with Inline before specifying. [ Download Product Specs ](#product-specs) [ Talk to a Specialist ](tel:1-866-566-5656) ## Where the 700 Series Fits Best The 700 Series is a strong option when the window does not need to open, but the design still needs strength, light, thermal performance, and clean aesthetics. ## Modern Residential Projects Use the 400 Series for large fixed windows, feature walls, stairwells, living rooms, and spaces where natural light is a design priority. ## Commercial and Architectural Projects The 400 Series can support commercial and architectural projects where fixed fiberglass windows, larger glass areas, durability, and technical documentation are important. ## High-Performance Projects For projects with strict performance targets, the 400 Series can be reviewed with Inline’s technical team to confirm suitable glass packages, documentation, and configuration details. ## Strip Window and Glass Band Designs Use 400 Series strip windows when the project calls for horizontal or vertical glass bands with a clean architectural look. ## Mixed Fixed and Operable Layouts Fixed windows do not provide ventilation on their own. The 400 Series can be planned alongside operable Inline window systems when the space also needs airflow. ## Feature Walls and Statement Spaces The 400 Series is well suited for spaces where uninterrupted glass and exterior views are a key part of the design. ## Choose the Right 700 Series Configuration From custom homes and renovations to specification-led projects, the 300 Series supports a wide range of residential, commercial, and high-performance applications. ## In-Swing Casement Windows A side-hinged operating style that opens inward. This option is useful when you want ventilation, easier interior access, and a clean exterior appearance. **Best for:** bedrooms, upper floors, urban projects, residential renovations, and architectural applications where outward operation is not ideal. ## Hopper Windows Configuration A practical operable option for ventilation in areas where window placement, wall layout, or project requirements make hopper operation the better fit. **Best for:** controlled ventilation, lower-profile openings, utility areas, multi-unit projects, and spaces that need inward operation. ## Fixed Windows Configuration Fixed units can be used beside operable windows to add more glass area, natural light, and design continuity without adding another opening sash. **Best for:** larger window groupings, companion units, commercial elevations, and layouts that combine ventilation with fixed glass. ## Customize the 700 Series for Your Project The 700 Series can be tailored to suit the performance, appearance, and documentation needs of your project. ## 01 ### Glass Options Double and triple pane glass options are available. Inline also offers IGMAC-certified insulating glass units to support performance and durability. [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## 02 ### Colour Options Choose from standard colours or request a custom colour match. Inline’s fiberglass windows can be finished in light or dark colours for interior and exterior design needs. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## 03 ### Grilles and Design Grilles can change the entire character of a window. They can make a new window feel more traditional, more architectural, or more consistent with a home. [ View Grille and SDL Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/window-grilles-and-sdl-bars/) ## Why Choose Fiberglass for Casement and Hopper Windows? Fiberglass is well suited for operable windows because it supports strength, stability, and long-term performance. For casement and hopper windows, that matters. The frame, sash, hardware, seals, and glass package all need to work together over time. Fiberglass helps support: - Strong fiberglass frame construction - Supports energy-efficient building envelopes - Resists expansion and contraction - Clean sightlines and custom finish options - Built for lasting durability and performance [ Learn Why Fiberglass Matters ](https://inlinefiberglass.com/resources/why-fiberglass/) ## See the 700 Series in Real Spaces Explore how the 700 Series is used where the window does not need to open, but the design still needs strength, light, thermal performance, and clean aesthetics. ## Need 700 Series Drawings and Installation Resources? Planning a project? Access available 700 Series technical documents to help with product review, specification, and installation planning. ## 700 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/700_Series_Product_Drawings.pdf) ## 700 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/700v3-2004.zip) ## Installation Guide — Single Unit Review installation information for single 700 Series units. [**Download Single Unit Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/700inst.-single.pdf) ## Installation Guide — Coupled Units Review installation information for coupled700 Series configurations. [**Download Coupled Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/700inst.-coupled.pdf) For project-specific performance data, certification documentation, or glass package confirmation, contact Inline Fiberglass before final specification. ## Common Questions About 700 Series Casement / Hopper Windows Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where is the 700 Series best used? The 700 Series is best used where in-swing operation is helpful. This includes high-rise projects, multi-unit buildings, urban homes, tight exterior spaces, and projects where easy interior cleaning or maintenance access matters. What is the difference between casement and hopper operation? A casement window is typically side-hinged, while a hopper window uses a different inward-opening style. Both can provide ventilation, but the better choice depends on the opening location, room type, and project requirements. Can the 700 Series be triple glazed? Yes, double and triple glass options are available. The right glass package should be confirmed based on your energy goals, comfort needs, project location, and technical requirements. Is the 700 Series available in custom colours? Yes, Inline offers a wide range of standard and custom colour options, including colour matching for project-specific needs. Confirm final colour availability and finish details during the quote process. Can the 700 Series be used in commercial projects? Yes, the 700 Series can be considered for commercial, multi-unit, and architectural projects. For commercial specifications, request product data, drawings, and current performance documentation from Inline. Is the 700 Series Passive House certified? The 700 Series was not listed in the client-provided PHIUS or PHI certified product list. If your project requires Passive House documentation, contact Inline to confirm the right product series, certification details, and supporting documents. Are drawings available? Yes. The existing 700 Series page includes PDF drawings, CAD drawings, and installation documents for single and coupled units. Does Inline install these windows directly? Installation and service paths should be confirmed based on project type and location. Inline works through direct inquiries and dealer-supported channels, so the best next step is to submit your project details and let the team route you correctly. ## Ready to Plan Your 700 Series Window Project? Tell Inline about your project and the team will help you confirm the right window style, glass package, colour options, technical documents, and next step. Talk to a Specialist [ Request a Free Quote ](#form) ## Tell Us About Your Window Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [400 Series Strip Fixed](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) **Published:** June 5, 2026 **Author:** anthony@webhaven.ca **Content:** # 400 Series Strip / Fixed Fiberglass Windows Fiberglass Fixed Windows for Expansive Glass, Clean Sightlines, and High-Performance Projects [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 400 Series strip fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/405SERIESB_vector-1920w-1024x1024.webp "405+SERIES+B_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## The Fixed Window System for Light-Filled Spaces Inline Fiberglass 400 Series Strip / Fixed Windows are designed for projects that need large glass areas, slim visual lines, and dependable fiberglass performance. This fixed window system is a strong fit for modern homes, commercial buildings, architectural glass bands, and high-performance projects where natural light, durability, and thermal performance matter. [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## Large Glass. Clean Design. The 400 Series is a fixed fiberglass window system designed for large glass areas, expansive views, and clean architectural sightlines. Available with double or triple pane glass, it can be combined with operable window styles where ventilation is needed. Standard and custom colour options are available, along with product drawings, technical documentation, and select Phius and Passive House-related resources for qualifying projects. **Best fit for:** - Large fixed openings - Strip window designs - Modern façades - Passive House-oriented projects - Areas where ventilation is handled elsewhere [ Request a Free Quote ](#form) ## Built for Projects Where Fixed Glass Has to Do More The 400 Series is not a basic picture window. It is an architectural fiberglass fixed window system designed for larger openings, cleaner sightlines, and long-term performance. ## Strength and Stability The rigid fiberglass frame supports larger glass areas with a clean profile. ## Energy Performance Available with double or triple pane glass options to support energy efficiency. ## Large-Format Design Designed for expansive glass areas and modern architectural applications. ## Design Flexibility Can be combined with operable windows where ventilation is required. ## Customization Available in standard colours or custom finishes to suit project needs. ## Technical Confidence Product drawings and specs resources are available for project planning. [ Download Product Specs ](#product-specs) [ Request a Free Quote ](#form) ## Where the 400 Series Works Best The 400 Series is a strong option when the window does not need to open, but the design still needs strength, light, thermal performance, and clean aesthetics. ## Modern Residential Projects Use the 400 Series for large fixed windows, feature walls, stairwells, living rooms, and spaces where natural light is a design priority. ## Commercial and Architectural Projects The 400 Series can support commercial and architectural projects where fixed fiberglass windows, larger glass areas, durability, and technical documentation are important. ## High-Performance Projects For projects with strict performance targets, the 400 Series can be reviewed with Inline’s technical team to confirm suitable glass packages, documentation, and configuration details. ## Strip Window and Glass Band Designs Use 400 Series strip windows when the project calls for horizontal or vertical glass bands with a clean architectural look. ## Mixed Fixed and Operable Layouts Fixed windows do not provide ventilation on their own. The 400 Series can be planned alongside operable Inline window systems when the space also needs airflow. ## Feature Walls and Statement Spaces The 400 Series is well suited for spaces where uninterrupted glass and exterior views are a key part of the design. ## Customize the 400 Series for Your Project The 400 Series can be tailored to match the design and performance needs of your project. ## 01 ### Glass Options Double and triple pane glass options are available. Inline also offers IGMAC-certified insulating glass units to support performance and durability. [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## 02 ### Colour Options Choose from standard colours or request a custom colour match. Inline’s fiberglass windows can be finished in light or dark colours for interior and exterior design needs. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## 03 ### Grilles and Design Grilles can change the entire character of a window. They can make a new window feel more traditional, more architectural, or more consistent with a home. [ View Grille and SDL Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/window-grilles-and-sdl-bars/) ## Why Choose Fiberglass for Fixed Windows Fixed windows often carry large glass loads and are expected to stay stable for years. Fiberglass is well suited for this role because it is strong, durable, and dimensionally stable. Inline’s fiberglass fixed windows are designed to support: - Large glass areas - Clean frame profiles - Long-term durability - Energy-efficient building goals - Lower maintenance than many traditional frame materials - Residential and commercial design flexibility [ Learn Why Fiberglass Matters ](https://inlinefiberglass.com/resources/why-fiberglass/) ## See the 400 Series in Real Spaces Explore how the 400 Series is used across homes and projects where expansive glass, natural light, and clean architectural design are priorities. ## Planning a Project? Get the Technical Details Early. Architects, builders, and commercial teams often need more than a product overview. They need drawings, product data, glass options, certification details, and confirmation that the selected configuration fits the project. **Inline can help with:** - Product selection - Fixed vs operable window planning - Glass package review / Colour and finish options - Custom sizing guidance - Technical documents - Commercial project support - Passive House / high-performance documentation review [ Download Product Specs ](#product-specs) ## 400 Series Drawings and Installation Resources Access available 400 Series technical documents to help with product review, specification, and installation. ## 400 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/400_Series_Product_Drawings.pdf) ## 400 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/400v3-2004.zip) For project-specific performance data, certification documentation, or glass package confirmation, contact Inline Fiberglass before final specification. ## Common Questions About 400 Series Strip / Fixed Windows Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where is the 400 Series best used? The 400 Series is best used for large fixed glass areas, strip window designs, modern homes, commercial projects, and high-performance buildings where clean sightlines and strong fiberglass framing are important. Do 400 Series fixed windows open? No. Fixed windows do not open. They are designed for light, views, strength, and thermal performance. If the room needs ventilation, the 400 Series can be planned with nearby operable Inline windows. Can the 400 Series be triple glazed? Yes, the 400 Series is available with double and triple pane glass options. The best glass package depends on the project goals, performance requirements, and product configuration. Is the 400 Series Passive House certified? The 400 Series is PHIUS certified. Certification documentation and performance requirements should still be confirmed with Inline based on the project configuration, glass package, and specification needs. Can I get custom colours? Yes. Inline offers standard and custom colour options. Custom colour availability, finish details, and approval requirements should be confirmed during the quote or specification process. Can the 400 Series be used in commercial projects? Yes. The 400 Series is well suited to many commercial and architectural projects where fixed fiberglass windows, larger glass areas, and technical documentation are required. Are drawings available? Yes. PDF drawings, CAD drawings, and installation documents are available for the 400 Series. Is this the right window if I want maximum airflow? No. If ventilation is the main goal, consider an operable Inline window series such as casement, awning, tilt and turn, hopper, slider, single hung, or double hung. The 400 Series is best when fixed glass is the right fit. ## Ready to Plan Your 400 Series Window Project? Tell Inline about your project and the team will help you confirm the right product path, glass package, colour options, and documentation. Whether you are planning a modern home, a commercial project, a Passive House-oriented build, or a large fixed glass opening, the 400 Series gives you a clean fiberglass window option built for long-term performance. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Tell Us About Your Window Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [325 Series Fixed](https://inlinefiberglass.com/products/fiberglass-windows/325-series-fixed/) **Published:** June 7, 2026 **Author:** anthony@webhaven.ca **Content:** # 325 Series Fixed Fiberglass Windows The 325 Series Fixed Window is built for projects that need clean sightlines, natural light, and strong fiberglass performance without an operating sash. [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 325 Series fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIES_vector1-1920w-fixed-1024x1024.webp "325+SERIES_vector+(1)-1920w - fixed - Inline Fiberglass - Inline Fiberglass") ## Designed for Large Glass and Clean Architectural Views For projects where fixed glass is a design priority, the 325 Series offers a clean, non-operating fiberglass window solution available in both High Profile and Low Profile frame configurations. Designed for residential, commercial, architectural, and high-performance applications, it supports unobstructed views, available double and triple pane glass options, and custom interior and exterior finishes. Product drawings, installation documents, and technical resources are also available to support planning, specification, and project development. [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## Fixed Windows for Light, Views, and Long-Term Performance The 325 Series Fixed Window is designed for spaces where ventilation is not required, but daylight, views, and thermal performance matter. Because the unit does not open, it supports a clean appearance and can be paired with operable 325 Series casement or awning windows when airflow is needed. **Best fit for:** - Living rooms, dining rooms, and bedrooms - Stairwells and feature walls - Contemporary home designs - Commercial and multi-unit projects - Fixed sidelites or picture-window layouts - Window groupings with casement or awning units [ Request a Free Quote ](#form) ## Where the 325 Series Fixed Window Works Best See how the 325 Series Fixed Window is used across projects that prioritize daylight, architectural design, and reliable fiberglass performance. ## For Homes Use 325 Series fixed windows when you want more daylight, a cleaner view, and a durable fiberglass frame system. They are well suited for rooms where the goal is comfort, brightness, and a stronger visual connection to the outdoors. ## For Architects and Specifiers The 325 Fixed Window gives design teams a fixed fiberglass option within the 325 Series family. Product drawings, CAD files, installation documents, and configuration-specific performance data can support early planning. ## For Builders and Contractors The 325 Series Fixed Window can support custom residential and light commercial builds where fixed glass areas need durable frames, clean finish options, and project-specific product guidance. ## For Commercial Projects For commercial and multi-unit projects, fixed fiberglass windows can help provide daylight, design consistency, and long-term frame performance. Contact Inline to confirm sizing, documentation, and configuration options for your project. ## Why Choose 325 Series Fixed Fiberglass Windows? The 325 Series Fixed Window offers a combination of fiberglass durability, design flexibility, and performance-focused glazing options for a wide range of projects. ### Clean Views Fixed windows are ideal when the view matters. With no operating sash, they help create a clear visual opening for natural light and outdoor visibility. ### Strong Frame Construction The 325 Series uses a fiberglass frame system designed for strength, dimensional stability, and long-term performance across changing temperatures. ### Energy-Efficient Glass Options Double and triple pane glass options are available, helping projects balance comfort, efficiency, sound control, and budget needs. ### Custom Design Flexibility Choose from standard or custom colour options for interior and exterior finishes. Inline can support colour matching for project-specific design needs. ### Residential and Commercial Fit The 325 Series Fixed Window can be used across home renovations, custom builds, commercial spaces, and architect-led projects. ### High and Low Profile Options High Profile and Low Profile frame configurations, giving designers and builders greater flexibility when balancing project requirements. [ Download Product Specs ](#product-specs) [ Request a Free Quote ](#form) ## 325 Series Fixed Windows Product Performance and Technical Details The 325 Series Fixed Window is part of Inline’s 325 Series fiberglass window platform and is designed for projects that prioritize natural light, clean sightlines, and dependable performance. Available with double or triple pane glass options, it supports residential, commercial, architectural, and high-performance applications, with technical drawings, CAD files, and installation documents available. **Technical Highlights:** - Fixed, non-operating fiberglass window design - Part of Inline's 325 Series window platform - 82.5 mm (3-1/4") frame depth - 2.3 mm (0.090") nominal wall thickness - AAMA 101/I.S.2 performance rating: F-HC55 - CSA A440 ratings: B7, C4 - Available with double and triple pane glass packages - Standard and custom interior and exterior colour options available - PDF drawings, CAD files, and installation documents available for download [ Download Product Specs ](#product-specs) ## Customize the 325 Series for Your Project The 325 Series Fixed Window can be configured to support different design and performance needs. ## 01 ### Glass Options Double and triple pane glass options are available. Inline also offers IGMAC-certified insulating glass units to support performance and durability. [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## 02 ### Colour Options Choose from standard colours or request a custom colour match. Inline’s fiberglass windows can be finished in light or dark colours for interior and exterior design needs. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## 03 ### Grilles and Design Grilles can change the entire character of a window. They can make a new window feel more traditional, more architectural, or more consistent with a home. [ View Grille and SDL Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/window-grilles-and-sdl-bars/) ## See the 325 Fixed Window Series in Real Spaces See how fixed fiberglass windows can support bright interiors, clean views, and modern or traditional design styles. ## 325 Fixed Window Series Drawings and Installation Resources Planning a project or preparing a specification package? Download available product documents or contact Inline for configuration-specific support. ### 325 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325_Series_Product_Drawings.pdf) ### 325 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325v3-2004.zip) ### Installation Guide — Single Unit Review installation information for single 325 Series units. [**Download Single Unit Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325inst-single.pdf) ### Installation Guide — Coupled Units Review installation information for coupled 325 Series configurations. [**Download Coupled Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325inst-coupled.pdf) Need help confirming the right fixed window configuration? Send us your project details and our team will help you find the correct product information. ## Common Questions About 325 Series Fixed Window Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What is a fixed window? A fixed window does not open. It is used when the main goals are natural light, views, energy performance, and clean design rather than ventilation. Where is the 325 Series Fixed Window best used? It is best used in areas where you want daylight and views without needing the window to open. Common uses include living rooms, stairwells, bedrooms, feature walls, commercial spaces, and window groupings. Can 325 Series fixed windows be triple glazed? Yes. The existing 325 Series product page states that double and triple pane glass are available. Confirm the best glass package with Inline based on your project goals. Is the 325 Series Fixed Window available in custom colours? Yes. Inline offers standard and custom colour options, including colour matching for project-specific needs. Can this window be used in commercial projects? Yes. The 325 Series Fixed Window can be considered for commercial and multi-unit applications. Contact Inline to confirm sizing, documents, and configuration-specific performance data. Is the 325 Series Fixed Window PHIUS certified? Yes. The 325 Series casement, awning, and fixed configurations are PHIUS certified. NFRC and AAMA apply to Inline products, and Energy Star eligibility depends on the selected glazing configuration. Contact Inline to confirm the current documentation for your exact size, glass package, and project requirements. What is the difference between the 325 Series Fixed Window and the 400 Series Strip / Fixed Window? The 325 Series Fixed Window is a fixed window option within the 325 Series family and can pair well with 325 casement and awning units. The 400 Series Strip / Fixed Window is better positioned for broader architectural fixed or strip-window applications. Can I download drawings? Yes. The current 325 Series Fixed page includes drawing downloads in PDF and CAD formats, along with single and coupled installation documents. Can fixed windows be combined with operable windows? Yes. Fixed windows are often paired with operable windows when a project needs both views and ventilation. ## Ready to Plan Your 325 Series Fixed Window Project? Tell us about your project and our team will help you confirm the right fiberglass window system, glass package, finish options, and next step. [ Talk to a Specialist ](#) [ Request a Free Quote ](#form) ## Tell Us About Your Window Project Share details about your project. Inline Fiberglass will review your request and help you take the next step. Product inquiry sales form Updates First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [325 Series Casement](https://inlinefiberglass.com/products/fiberglass-windows/325-series-casement/) **Published:** June 8, 2026 **Author:** anthony@webhaven.ca **Content:** # 325 Series Fiberglass Casement Windows Outward-opening fiberglass casement windows built for fresh air, clean views, and long-term performance. [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 325 Series casement fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESOPEN_vector-1920w-1024x1024.webp "325+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## Clean Sightlines. Fresh Air. High Performance. Inline Fiberglass 325 Series Casement Windows are designed for projects that need strong ventilation, energy-efficient performance, and clean architectural aesthetics. Built with durable fiberglass frames and an outward-opening sash, the 325 Series helps maximize airflow, natural light, and long-term comfort, making it a strong choice for premium homes, custom builds, renovations, and select commercial applications. - Excellent ventilation with outward-opening operation - Unobstructed views and strong natural light - Fiberglass frame strength and dimensional stability - Available with double or triple pane glass - Custom colour and hardware options - Product drawings, CAD files, and installation documents available [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## Features and Specifications for Confident Product Selection The 325 Series Casement is not a generic replacement window. It is part of Inline’s fiberglass window system, designed for projects where strength, comfort, and long-term performance are part of the decision. **Important specification note:** Certification status, thermal data, and documentation can vary by product configuration, glass package, size, and project requirements. Contact Inline to confirm the right documentation before specifying or submitting. **Performance and construction highlights:** - Double and triple pane glass options are available for different energy, comfort, and project needs. - IGMAC certified insulating glass units support glass quality, code confidence, and long-term performance expectations. - Certification and performance documentation is available by configuration, including AAMA, PHIUS, PHI, and NFRC information. - PDF drawings, CAD drawings, and installation documents are available to support architects, builders, and project teams. - Custom colour options include standard, dark, light, and colour-matched finishes, supported by Inline’s AAMA certified paint applicator positioning. [ Download Product Specs ](#product-specs) ## Where 325 Series Casement Windows Work Best The 325 Series Casement is a strong fit when you want an operable fiberglass window with reliable ventilation, a clean exterior look, and strong performance potential. **Best-fit applications** - Living rooms, bedrooms, kitchens, and home offices - Custom homes and premium renovations - Spaces where outward-opening operation is preferred - Projects that need strong natural light and open views - High-performance residential projects - Builder, architect, and light commercial applications where casement operation fits the design [ Request a Free Quote ](#form) ## 325 Series Casement Technical Snapshot Review key specifications, available options, and technical resources for the 325 Series Casement Window. ## Product type: Fiberglass casement window ## Series: 325 Series ## Operation: Outward-opening casement ## Frame material: Pultruded fiberglass ## Glass options: Double and triple pane ## Hardware: Encore Operators, Encore Sash Lock, contemporary cover and handle options ## Colour options: Standard and custom colour options; colour matching available ## Documents PDF drawings, CAD drawings, single installation guide, coupled installation guide ## Certification note: Confirm applicable AAMA, NFRC, PHIUS, PHI, and IGMAC documentation by project and configuration. ## Customize the 325 Casement Series for Your Project The 325 Casement Series can be tailored to suit the performance, appearance, and documentation needs of your project. ## 01 ### Glass Options Inline offers double and triple pane glass options to help balance comfort, energy efficiency, and overall project performance across a range of residential and commercial applications. [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## 02 ### Colour Options Inline supports standard and custom colour choices, including light and dark finishes. Custom colour matching is available for projects that need a specific architectural finish. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## 03 ### Hardware Options Choose from available hardware options designed to support smooth operation, secure locking, and a finished look that complements the overall window design. [ View Hardware Options ](#options) ## Handle and Locking Options for the 325 Awning Series Choose Encore hardware for a folding operator handle and matching sash lock in White or Black. Choose Contemporary hardware for a more architectural handle and low-profile lock appearance in White, Black, Antique Brass, or Satin Nickel. ![White desktop stapler against a plain white background](https://inlinefiberglass.com/wp-content/uploads/2026/06/Encore-white-325-awning.png "Encore-white-325-awning - Inline Fiberglass - Inline Fiberglass") ## Encore Operator & Lock Package The Encore option combines a folding operator handle with matching sash-lock hardware. Available finishes: White and Black. ![Two white plastic mechanical parts with rectangular shapes and a hinge, likely hardware brackets on a white background.](https://inlinefiberglass.com/wp-content/uploads/2026/06/Contemporary-white-325-awning-01.png "Contemporary-white-325-awning-01 - Inline Fiberglass - Inline Fiberglass") ## Contemporary Handle & Lock Package The Contemporary option provides a more architectural handle and low-profile lock appearance. Available finishes: White, Black, Antique Brass, and Satin Nickel. ## Selection & Finish Note Hardware availability can vary by window size, handedness, configuration, and supplier availability. Confirm the current handle, lock, and finish combination during quoting. [ Visit an Inline Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Why Choose Fiberglass Casement Windows? Fiberglass is a strong material choice for casement windows because the sash and frame need to stay stable through daily operation, wind pressure, seasonal temperature changes, and long-term use Inline’s fiberglass windows are designed to support: - Long-term durability - Better dimensional stability than many common window materials - Energy-efficient performance - Clean, modern sightlines - Lower maintenance expectations than many traditional materials - Custom design flexibility Inline’s positioning should stay practical: fiberglass is not just an option in the catalogue. It is the company’s focus. [ Learn Why Fiberglass Matters ](https://inlinefiberglass.com/resources/why-fiberglass/) ## See the 325 Casement Series in Real Spaces Explore the 325 Series Casement Window in real projects where ventilation, natural light, and clean architectural design are key priorities. ## 325 Casement Series Drawings and Installation Resources Planning a project? Access available 325 Casement Series technical documents to help with product review, specification, and installation planning. ### 325 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325_Series_Product_Drawings.pdf) ### 325 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325v3-2004.zip) ### Installation Guide — Single Unit Review installation information for single 325 Series units. [**Download Single Unit Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325inst-single.pdf) ### Installation Guide — Coupled Units Review installation information for coupled 325 Series configurations. [**Download Coupled Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325inst-coupled.pdf) For project-specific performance data, certification documentation, or glass package confirmation, contact Inline Fiberglass before final specification. ## Common Questions About 325 Series Casement Window Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where are 325 Series Casement Windows best used? They are best used in projects where you want fresh air, strong natural light, clean views, and outward-opening operation. Common applications include bedrooms, living rooms, kitchens, home offices, custom homes, renovations, and select commercial projects. Can 325 Series Casement Windows be triple glazed? Yes. The existing product page states that the 325 Series is available with double and triple pane glass options. Confirm the best glass package with Inline based on your energy goals, window size, and project requirements. Are custom colours available? Yes. Standard and custom colour choices are available, including colour matching. Inline is also an AAMA certified paint applicator. Is the 325 Series Casement suitable for Passive House projects? Inline features Phius certification for its 325 Series Casement. However, before using the product in a Passive House or high-performance project, ask Inline to confirm the exact certified configuration, glass package, and supporting documents. Can this window be used in commercial projects? Yes, the 325 Series Casement may be suitable for select commercial or light commercial projects where outward-opening casement operation is appropriate. Commercial teams should request product specs, drawings, and project support before specifying. Are drawings and CAD files available? Yes. The current page links to PDF drawings, CAD drawings, and installation documents for single and coupled installation conditions. How do I get a quote? Send Inline your project details, including location, product type, rough sizes if available, timeline, and whether you are a homeowner, builder, architect, developer, or dealer. Inline can then help route you to the right quote or product support path. ## Ready to Plan Your 325 Casement Series Window Project? Tell us about your project and our team will help you take the next step. Whether you are replacing windows, planning a custom home, preparing architectural drawings, or reviewing options for a commercial project, Inline Fiberglass can help you confirm the right product path. [ Talk to a Specialist ](#) [ Request a Free Quote ](#form) ## Tell Us About Your Window Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [325 Series Awning](https://inlinefiberglass.com/products/fiberglass-windows/325-series-awning/) **Published:** June 8, 2026 **Author:** anthony@webhaven.ca **Content:** # 325 Series Awning Fiberglass Windows Fresh air, protected ventilation, and fiberglass performance in one outward-opening window. [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 325 Series awning fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESAWNINGOPEN_vector-1920w-awening-1024x1024.webp "325+SERIES+AWNING+OPEN_vector-1920w-awening - Inline Fiberglass - Inline Fiberglass") ## Practical Ventilation with Durable Fiberglass Construction Inline Fiberglass 325 Series Awning Windows are built for projects that need ventilation, daylight, and dependable weather performance. Hinged at the top and opening outward from the bottom, awning windows help bring fresh air into a room while helping protect the opening during light rain. Designed for high-end residential, commercial, and high-performance building applications, the 325 Series combines a strong fiberglass frame, clean sightlines, custom finish options, and double or triple pane glass availability. [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## Where 325 Series Awning Windows Work Best Awning windows are a smart fit when the goal is controlled ventilation without giving up comfort, daylight, or clean design. Use 325 Series Awning Windows For: **Bathrooms and laundry rooms** Bring in fresh air while maintaining a compact operating style. **Bedrooms and living spaces** Everyday ventilation without needing a large swinging sash. **Kitchens** Use In areas where outward-opening ventilation is useful. **Basements and lower-level rooms** Add fresh air and daylight where window placement may be limited. **Commercial and performance-led projects** Support projects that need durable fiberglass construction [ Request a Free Quote ](#form) ## Built for Strength, Efficiency, and Everyday Use The 325 Series is designed as a heavy-duty outward-opening fiberglass window system. Its awning configuration is hinged at the top and opens from the bottom, creating a canopy-like angle that supports ventilation while helping reduce rain entry. ### Heavy-duty fiberglass frame The 325 Series frame is listed with an 82.5 mm / 3-1/4″ depth and a 2.3 mm / 0.090″ nominal wall thickness. ### Designed for changing weather Awning windows are a practical choice when ventilation is needed while helping protect the opening from light rain. ### Double and triple pane glass The 325 Series offers double and triple pane glass options for projects focused on energy efficiency. ### Phius Certified awning Identified as Phius Certified and this certification should be presented as specific to the product, not as a claim that applies across all Inline products. ### IGMAC certified Inline’s existing page states that its insulating glass units are IGMAC certified and available in double and triple glass options. ### AAMA certified paint applicator Inline’s existing page states that the company is an AAMA certified paint applicator and offers standard or custom colour matching. [ Download Product Specs ](#product-specs) [ Request a Free Quote ](#form) ## Why Choose Fiberglass for Awning Windows? Awning windows need to open, close, seal, and hold their shape over time. Fiberglass helps support that job because it is strong, stable, and well-suited to window and door systems built for long-term performance. Inline’s master copy brief positions the brand around fiberglass-only focus, vertically integrated manufacturing, premium performance, and residential/commercial versatility. It also directs the new website to balance plain-English homeowner clarity with enough technical credibility for architects, builders, and specifiers. [ Learn Why Fiberglass Matters ](https://inlinefiberglass.com/resources/why-fiberglass/) ## Fiberglass Performance for Everyday Ventilation The 325 Series combines fiberglass construction, premium hardware, energy-efficient glass options, and flexible finish choices for a wide range of residential and commercial projects. ### Strength for operable windows The 325 Series uses concealed stainless steel hinges and premium hardware anchored into reinforcements within the fiberglass substrate. ### Strong Dimensional stability Fiberglass helps the frame hold its shape across changing temperatures, supporting long-term fit and operation. ### Energy-efficient design options Available double and triple pane glass options help the window meet different comfort and performance goals ### Flexible Colour and Finish Choose standard or custom colours for the interior and exterior to match the project style. ## 325 Series Awning Windows Product Performance and Technical Details The 325 Series Awning Window is part of Inline’s fiberglass window platform and is designed for projects that require controlled ventilation, durable construction, and flexible glazing options. Available for residential, commercial, and high-performance building applications, the system combines outward-opening operation with the material advantages of fiberglass and a range of configuration options to support different project requirements. **Technical Snapshot** - Fiberglass awning window system - Hinged at the top, opens outward from the bottom - 82.5 mm (3-1/4") frame depth - 2.3 mm (0.090") nominal wall thickness - Double and triple pane glass options available - Encore Operators and Encore Sash Lock hardware - Concealed stainless steel hinges - Q-Lon interior air-seal gasket - Santoprene exterior rain-screen bulb gasket - AP LC-65 AAMA rating and CSA A440 ratings of A3, B7, and C5 - Available in Phius Certified configurations - Compatible with standard and custom colour options [ Download Product Specs ](#product-specs) ## Customize the 325 Awnings Series for Your Project The 325 Awning Series can be tailored to suit the performance, appearance, and documentation needs of your project. ## 01 ### Glass Options Double and triple pane glass options. For projects where energy performance, comfort, or condensation control matter, ask Inline which glass package is the right fit for your opening, location, and building goals [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## 02 ### Colour Options Wide range of colour choices for windows and doors, including standard finishes and custom colour matching options. AAMA certified paint applicator, supporting consistent finish application across product line. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## 03 ### Hardware Options The 325 Series offers hardware options including Encore Operators, Encore Sash Lock, contemporary covers and handles, and additional sash lock selections to help match project requirements and design preferences. [ View Our Hardware Options ](#options) ## Handle and Locking Options for the 325 Awning Series Choose Encore hardware for a folding operator handle and matching sash lock in White or Black. Choose Contemporary hardware for a more architectural handle and low-profile lock appearance in White, Black, Antique Brass, or Satin Nickel. ![White desktop stapler against a plain white background](https://inlinefiberglass.com/wp-content/uploads/2026/06/Encore-white-325-awning.png "Encore-white-325-awning - Inline Fiberglass - Inline Fiberglass") ## Encore Operator & Lock Package The Encore package combines a folding operator handle with matching sash-lock hardware. Available finishes: White and Black. ![Two white plastic mechanical parts with rectangular shapes and a hinge, likely hardware brackets on a white background.](https://inlinefiberglass.com/wp-content/uploads/2026/06/Contemporary-white-325-awning-01.png "Contemporary-white-325-awning-01 - Inline Fiberglass - Inline Fiberglass") ## Contemporary Handle & Lock Package The Contemporary package provides a more architectural handle and low-profile lock appearance. Available finishes: White, Black, Antique Brass, and Satin Nickel. ## Selection & Finish Note Hardware availability can vary by window size, configuration, and supplier availability. Confirm current handle, lock, and finish options during quoting. [ Visit an Inline Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## See the 325 Awning Series in Real Spaces See how the 325 Series awning windows look in finished rooms, bedrooms, and modern residential spaces. ## 325 Awning Series Drawings and Installation Resources Planning a project? Access available 325 Awning Series technical documents to help with product review, specification, and installation planning. ### 325 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325_Series_Product_Drawings.pdf) ### 325 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325v3-2004.zip) ### Installation Guide — Single Unit Review installation information for single 325 Series units. [**Download Single Unit Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325inst-single.pdf) ### Installation Guide — Coupled Units Review installation information for coupled 325 Series configurations. [**Download Coupled Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/325inst-coupled.pdf) For project-specific performance data, certification documentation, or glass package confirmation, contact Inline Fiberglass before final specification. ## Common Questions About 325 Series Awning Window Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where are 325 Series awning windows best used? They are best used in rooms where ventilation matters, including bathrooms, bedrooms, kitchens, basements, and living areas. Because they are hinged at the top and open outward, they can help bring in fresh air while offering more rain protection than some other operable window styles. Can 325 Series awning windows be triple glazed? Yes. The current 325 Series page states that the product is available in double and triple pane glass. Confirm the right glass package with Inline based on your project goals. Are 325 Series awning windows Phius Certified? The 325 Awning is Phius Certified. However, we ask customers to confirm the correct certification documents for their specific project. Can I choose custom colours? Yes. Inline offers standard and custom colour choices and can match colours for project needs. Inline is an AAMA certified paint applicator. Can 325 Series awning windows be used in commercial projects? Yes, they can be considered for commercial and high-performance projects where the product fit, size, glass package, and documentation align with the project requirements. Confirm the right product, rating, and documentation with Inline before specifying. What hardware is available? Premium hardware options include Encore Operators, Encore Sash Lock, contemporary covers and handles, and sash lock options. How do I get a quote? Use Inline’s contact form to send your project details, location, product interest, approximate sizes, and any plans or photos you have available. Inline accepts inquires from homeowners, architects, builders, developers, dealers, and more. ## Ready to Plan Your 325 Awning Series Window Project? Tell us about your project and our team will help you take the next step. Whether you are replacing windows, planning a custom home, preparing architectural drawings, or reviewing options for a commercial project, Inline Fiberglass can help you confirm the right product path. Talk to a Specialist [ Request a Free Quote ](#form) ## Tell Us About Your Window Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Subscribe First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [300 Series Tilt Turn](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) **Published:** June 1, 2026 **Author:** anthony@webhaven.ca **Content:** # 300 Series Fiberglass Tilt and Turn Windows European-style operation. Fiberglass strength. Built for projects where ventilation, comfort, and performance matter. [ Request a Quote ](#form) [ Product Details ](#details) ![Inline Fiberglass 300 Series tilt-turn fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/300SERIESOPEN_vector-1920w-1024x1024.webp "300+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## Two Opening Styles. One High-Performance Fiberglass Window. Inline Fiberglass 300 Series tilt and turn windows give you two opening options in one window. Tilt the sash inward from the top for secure ventilation, or swing the sash inward for full access, easier cleaning, and possible egress applications depending on window size, configuration, and local code requirements. Designed with durable fiberglass frames, double or triple pane glass options, and clean modern sightlines, the 300 Series is a strong fit for custom homes, renovations, multi-unit projects, and high-performance building designs. [ Download Specs ](#product-specs) [ Request a Free Quote ](#form) ## A Window for Ventilation, Access, and Clean Design The 300 Series is designed for buyers who want more than a standard window style. Its tilt and turn operation gives homeowners, architects, and builders more control over airflow, maintenance, and design flexibility. **Best fit for:** - Custom residential homes - Modern renovations - Multi-unit residential projects - Commercial and institutional spaces - Energy-efficient and performance-focused building projects - Rooms where secure ventilation and easy cleaning matter [ Request a Free Quote ](#form) ## 300 Series Fiberglass Tilt and Turn Windows Core benefits Designed to provide flexible operation, energy-efficient performance, and the strength of fiberglass construction, the 300 Series combines modern functionality with clean architectural design for a wide range of residential and commercial applications. ## Flexible Ventilation Tilt inward from the top for controlled ventilation and everyday comfort. ## Full Inward Opening Swing inward for easy access, cleaning, and potential egress. ## Fiberglass Frame Strength Built for long-term dimensional stability and structural performance. ## Energy-Focused Options Available with double or triple pane glass depending on project needs. ## Clean Appearance A strong fit for modern, high-performance, and design-led projects. ## Custom Finish Options Choose standard or custom colours to match the project vision. [ Download Product Specs ](#product-specs) [ Request a Free Quote ](#form) ## Built with Product-Specific Performance in Mind The 300 Series combines fiberglass framing, premium operating hardware, advanced sealing, and flexible glazing capacity to support demanding window projects. **Specifier note:** Certification, test data, and performance requirements can vary by configuration. Contact Inline Fiberglass to confirm the right documentation for your project. **Performance and construction highlights:** - Dual-action SIEGENIA hardware for tilt and turn operation - 60mm / 2-3/8" fiberglass frame depth - 2.5mm / 0.100" nominal wall thickness - Dual bulb Santoprene gasket seals - Pressure-equalizing exterior header gap - Glazing pocket from 22mm / 7/8" to 38mm / 1-1/2" - AAMA 101/I.S.2 rating: DA C60 for operable casement/hopper configuration - AAMA 101/I.S.2 rating: FHC 65 for fixed lite configuration - CSA A440 ratings: A3, B7, C5 for casement/hopper; B7, C4 (fixed) [ Download Product Specs ](#product-specs) ## Where the 300 Series Works Best From custom homes and renovations to specification-led projects, the 300 Series supports a wide range of residential, commercial, and high-performance applications. ## For Homeowners The 300 Series is a strong choice when you want a window that feels premium, performs well, and is easier to use day to day. The tilt function allows fresh air without fully opening the sash. The turn function makes cleaning the exterior glass easier from inside the home. **Good fit for:** - Bedrooms - Living rooms - Home offices - Upper floors - Custom homes - Energy-efficiency upgrades [ Start a Window Quote ](#form) ## For Architects and Specifiers The 300 Series provides a tilt and turn fiberglass window solution with available technical documentation, performance data, and support for projects requiring inward operation, secure ventilation, and fiberglass durability. **Useful for:** - High-performance projects - Multi-unit buildings - Commercial interiors - Projects needing double or triple pane glass options - Energy-efficiency upgrades [ Download Drawings and Specs ](#product-specs) ## For Builders and Contractors Builders can offer a versatile fiberglass window solution with strong performance, clean finishes, and flexible operation for custom builds and renovations. **Good fit for:** - Custom home builds - Premium renovations - Builder-led window packages - Projects requiring colour coordination - Plans needing technical documentation before ordering [ Talk to a Product Specialist ](tel:1-866-566-5656) ## How Tilt and Turn Windows Work From custom homes and renovations to specification-led projects, the 300 Series supports a wide range of residential, commercial, and high-performance applications. ## Tilt Mode The top of the sash tilts inward. This allows controlled ventilation while keeping the opening smaller than a fully open window. **Best for:** - Everyday airflow - Bedrooms and Bathrooms - Upper-floor ventilation - Cooler seasons when full opening is not needed [ Start a Window Quote ](#form) ## Turn Mode The sash swings inward from the side. This creates a wider opening for access, cleaning, and stronger ventilation. **Best for:** - Cleaning exterior glass from indoors - Full room airing - Possible egress use where size, configuration, installation, and code requirements allow - Projects where inward operation is preferred [ Download Drawings and Specs ](#product-specs) ## Customize the 300 Series for Your Project The 300 Series can be tailored to suit the performance, appearance, and documentation needs of your project. ## 01 ## Glass Options Available glass configurations may include double or triple pane options depending on project requirements. Triple glazing can help support improved comfort, lower heat transfer, and better performance in high-efficiency building envelopes. [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## 02 ## Colour Options Inline Fiberglass offers standard and custom colour options for interior and exterior finishes. Inline can do any colour. Confirm colour selection, finish requirements, and any project-specific timing considerations during the quote process. [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## 03 ## Fixed Combinations The 300 Series also includes fixed window configurations, allowing operable tilt and turn units to be paired with larger fixed glass areas while maintaining consistent sightlines, aesthetics, and overall design continuity throughout the project. [ Compare Series Options ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## Why Choose Fiberglass for Tilt and Turn Windows? Tilt and turn windows depend on strong frames, reliable hardware support, and stable long-term operation. Fiberglass is well suited for this because it is strong, durable, and dimensionally stable. For the 300 Series, fiberglass helps support: - Long-term frame stability - Clean sightlines - Strong hardware anchoring - Better resistance to expansion and contraction than many common frame materials - Better resistance to expansion and contraction than many common frame materials - Custom finish flexibility [ Learn Why Fiberglass Matters ](https://inlinefiberglass.com/resources/why-fiberglass/) ## See the 300 Series in Real Spaces Explore how the 300 Series is used across homes and projects where ventilation, comfort, and clean architectural design are priorities. ## 300 Series Drawings and Installation Resources Planning a project? Access available 300 Series technical documents to help with product review, specification, and installation planning. ## 300 Series Drawings — PDF Download product drawings to assist with project planning, design review, and development. [**Download PDF Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/300SeriesProductDrawings-17eaec50.pdf) ## 300 Series Drawings — CAD Access CAD drawings to support project design, planning, and specification development. [**Download CAD Drawings >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/300SeriesProductDrawings-17eaec50-1.pdf) ## Installation Guide — Single Unit Review installation information for single 300 Series units. [**Download Single Unit Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/300inst._-_coupled.pdf) ## Installation Guide — Coupled Units Review installation information for coupled 300 Series configurations. [**Download Coupled Installation Guide >**](https://inlinefiberglass.com/wp-content/uploads/2026/06/300inst._-_coupled.pdf) For project-specific performance data, certification documentation, or glass package confirmation, contact Inline Fiberglass before final specification. ## Common Questions About 300 Series Tilt and Turn Window Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What is the 300 Series best used for? The 300 Series is best for projects that need flexible ventilation, inward operation, easy cleaning access, and strong fiberglass frame performance. It is a good fit for custom homes, renovations, multi-unit buildings, and design-led projects. How does a tilt and turn window open? A tilt and turn window has two opening modes. In tilt mode, the top of the sash tilts inward for controlled ventilation. In turn mode, the sash swings inward from the side for full opening and easier cleaning. Can the 300 Series be triple glazed? Yes, the 300 Series can accommodate double or triple pane glass options. Project requirements, sizing, and performance goals should be reviewed with Inline Fiberglass before final selection. Is the 300 Series available in custom colours? Yes. Inline confirms it can do any colour. However, confirm the final colour, finish requirements, and timing with Inline during the quote process. Can 300 Series windows be used in commercial projects? Yes, the 300 Series may be suitable for commercial, institutional, and multi-unit projects where the operating style and performance characteristics fit the design. Contact Inline Fiberglass to confirm project-specific requirements. Are 300 Series windows Passive House or PHIUS certified? Inline confirmes NFRC and AAMA documentation across all products, IGMAC-certified glass units across all products, and Energy Star eligibility depending on glazing configuration. Contact Inline Fiberglass to confirm the exact certification documents for your selected 300 Series configuration. Are drawings available? Yes. PDF drawings, CAD drawings, and installation documents are available for the 300 Series. How do I know if the 300 Series is right for my project? Send Inline Fiberglass your project details, drawings, window schedule, or design goals. The team can help confirm whether the 300 Series or another fiberglass window series is the better fit. ## Ready to Plan Your 300 Series Window Project? Tell us about your project and our team will help you take the next step. Whether you are replacing windows, planning a custom home, preparing architectural drawings, or reviewing options for a commercial project, Inline Fiberglass can help you confirm the right product path. [ Talk to a Specialist ](#) [ Request a Free Quote ](#form) ## Tell Us About Your Window Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Subscribe First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Fiberglass Windows](https://inlinefiberglass.com/products/fiberglass-windows/) **Published:** May 31, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Windows Built for Long-Term Performance Inline Fiberglass manufactures fiberglass windows for homeowners, architects, builders, commercial projects, and high-performance building needs. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ View Products ](#products) ## Our window systems are designed for projects where comfort, energy efficiency, durability, clean sightlines, and design flexibility all matter Whether you need tilt and turn windows, casement windows, fixed windows, sliders, single hung windows, double hung windows, or high-performance window options, Inline helps you choose the right fiberglass window series for your project. [ View Window Products ](#products) [ Compare Window Series ](https://inlinefiberglass.com/services/custom-fiberglass-windows/) ## Fiberglass Is Not an Add-On Product Line for Inline Fiberglass is the material Inline is built around. That focus helps our team support stronger product knowledge, clearer guidance, and window systems designed around the strengths of fiberglass: stability, strength, thermal performance, durability, and clean design. Inline fiberglass windows are used across: - Residential window replacement projects - Custom homes and renovations - Architect-led projects - Builder and contractor projects - Commercial and institutional buildings - Passive House and high-performance building needs - Dealer-supported projects across select markets ## Why Homeowners, Builders, and Architects Choose Inline Inline combines fiberglass specialization, manufacturing control, technical support, and product flexibility to support a wide range of residential and commercial projects. ### Fiberglass Manufacturing Specialization Inline focuses exclusively on fiberglass windows and doors, delivering specialized expertise, product consistency, and long-term performance across every series. ### Canadian Manufacturing & Showroom Visit Inline’s Toronto / Etobicoke showroom and benefit from local manufacturing, product support, and project consultation services. ### Residential & Commercial Experience Inline products are used across custom homes, renovations, commercial buildings, and high-performance projects throughout multiple markets. ### Technical Resources & Product Support Access product specifications, technical documents, drawings, and support resources to assist with planning and product selection. ### Certified Performance & Testing Standards Product-specific certification details are available where applicable, including PHIUS, PHI, NFRC, AAMA, Energy Star, and IGMAC. ### Flexible Design & Performance Options Choose from glazing, colours, hardware, grilles, and configuration options tailored to specific product series and project requirements. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) [ Talk to a Specialist ](tel:1-866-566-5656) ## Compare Inline Fiberglass Window Series Explore the full Inline fiberglass window lineup and compare operating styles, design applications, and performance-focused features. ![Inline Fiberglass 300 Series tilt-turn fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/300SERIESOPEN_vector-1920w-1024x1024.webp "300+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## 300 Series Tilt & Turn Windows **Best for:** Ventilation, easy cleaning, modern homes, high-performance projects The 300 Series Tilt & Turn window offers two ways to open. Tilt the sash inward from the top for controlled ventilation, or turn the handle to open the window inward like a door for wider airflow and easier cleaning. This is a strong option for projects that need clean design, practical ventilation, and a high-performance window feel. **Best-fit uses:** - Bedrooms and Living spaces - Multi-storey homes - Modern custom homes - High-Performance homes - Inward-Opening Spaces [ View 300 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) ![Inline Fiberglass 400 Series strip fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/405SERIESB_vector-1920w-1024x1024.webp "405+SERIES+B_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## 400 Series Strip / Fixed Windows **Best for:** Large glass, modern design, minimal sightlines, wide openings The 400 Series is a contemporary fixed fiberglass window system designed for larger glass areas and clean sightlines. It can help create dramatic walls of glass while still allowing operable windows to be incorporated where needed. This is a strong fit for projects that need more daylight, larger views, and a modern architectural look. **Best-fit uses:** - Large fixed openings - Modern homes - Commercial spaces - Feature walls and view-focused rooms - Projects needing minimal sightlines [ View 400 Series Strip Windows ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## 700 Series Casement / Hopper Windows **Best for:** Ventilation, cleaning access, European-style operation The 700 Series is an operable fiberglass window series with casement, hopper, and fixed window options. It is designed for projects that need strong ventilation, practical operation, and flexible window configurations. This series is ideal for projects that require operable windows with strong performance and clean sightlines. **Best-fit uses:** - Bedrooms - Kitchens - Bathrooms - Basements - Multi-unit projects - Architect-led residential projects [ View 700 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/700-series-casement-hopper/) ![Inline Fiberglass 325 Series fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIES_vector1-1920w-fixed-1024x1024.webp "325+SERIES_vector+(1)-1920w - fixed - Inline Fiberglass - Inline Fiberglass") ## 325 Series Fixed Windows **Best for:** Natural light, unobstructed views, fixed openings The 325 Fixed window option is designed for projects that prioritize larger glass areas, uninterrupted views, and strong energy performance within a streamlined fixed window configuration. Choose this path when ventilation is not required and the priority is daylight, comfort, and clean design. **Best-fit uses:** - Picture windows - Living rooms - Bathrooms - Stairwells and feature openings - High and low profile fixed windows - Where view and light matter most [ View 325 Fixed Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-fixed/) ![Inline Fiberglass 325 Series casement fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESOPEN_vector-1920w-1024x1024.webp "325+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## 325 Series Casement Windows **Best for:** Everyday ventilation, airflow, unobstructed views The 325 Casement window is a practical operable fiberglass window option for rooms that need fresh air, clear views, and a clean window profile. Casement windows are often a good fit when homeowners want strong ventilation without moving to a tilt and turn system. **Best-fit uses:** - Bedrooms - Kitchens - Living rooms - Home offices - Renovations - Custom homes [ View 325 Casement Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-casement/) ![Inline Fiberglass 325 Series awning fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESAWNINGOPEN_vector-1920w-awening-1024x1024.webp "325+SERIES+AWNING+OPEN_vector-1920w-awening - Inline Fiberglass - Inline Fiberglass") ## 325 Series Awning Windows **Best for:** Controlled ventilation, compact openings, weather-conscious airflow The 325 Awning window is designed for projects that require controlled ventilation, weather protection, and efficient airflow through compact openings. Choose this path when ventilation, comfort, and energy performance are priorities. **Best-fit uses:** - Bathrooms - Basements - Kitchens - Smaller wall openings - Areas paired with fixed windows - Rooms where ventilation matters but space is limited [ View 325 Awning Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-awning/) ![Inline Fiberglass 800 Series horizontal slider fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/800SERIESOPEN_vector-1920w-1024x1024.webp "800+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## 800 Series Horizontal Slider Windows **Best for:** Horizontal openings, simple operation, traditional layouts The 800 Series Horizontal Slider window opens by sliding left or right. It is designed for full top-to-bottom ventilation on the operable side, while the other side remains fixed. This is a practical option for projects where a horizontal sliding window is the right fit for the opening and room layout. **Best-fit uses:** - Bedrooms - Basements - Renovations - Wider horizontal openings - Traditional home layouts - Spaces where swing-style operation is not ideal [ View 800 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/800-series-horizontal-slider/) ![Inline Fiberglass 850 Series single-hung fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/850SERIES_vectorarrow-1920w-2-1024x1024.webp "850+SERIES_vector+arrow-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## 850 Series Single Hung Windows **Best for:** Traditional homes, simple vertical operation, replacement projects The 850 Series Single Hung window provides a classic vertical window style. The lower sash operates while the upper sash remains fixed. This series is a good fit for projects that need a familiar window style with the strength and performance benefits of fiberglass. **Best-fit uses:** - Traditional homes - Replacement projects - Bedrooms - Front-facing windows - Multi-window elevations - Projects needing a classic look [ View 850 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/850-series-single-hung/) ![Inline Fiberglass 900 Series double-hung fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/900SERIES_vectorarrow-1920w-1024x1024.webp "900+SERIES_vector+arrow-1920w - Inline Fiberglass - Inline Fiberglass") ## 900 Series Double Hung Windows **Best for:** Traditional design, flexible ventilation, classic window styling The 900 Series Double Hung window includes two operating sashes that move up and down. This allows ventilation from the top, bottom, or both. This is a strong fit for homeowners who want traditional window styling with more ventilation flexibility than a single hung window. **Best-fit uses:** - Traditional homes - Renovations - Bedrooms - Living rooms - Front elevations - Projects where classic appearance matters [ View 900 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/900-series-double-hung/) ## Which Fiberglass Window Series Is Right for Your Project? Not every window series is designed for the same use. The right choice depends on the opening, style, ventilation needs, glass size, performance goals, and project type. ![Inline Fiberglass 300 Series tilt-turn fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/300SERIESOPEN_vector-1920w-1024x1024.webp "300+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## Best for Ventilation Choose a window series with strong operable function. Good options include: - 300 Series Tilt & Turn - 700 Series Casement / Hopper - 325 Series Casement - 325 Series Awning - 800 Series Horizontal Slider - 850 Series Single Hung - 900 Series Double Hung Ask a Product Specialist ## Best for Large Glass and Views Choose a fixed or strip window system when the goal is natural light, larger glass, and cleaner sightlines. Good options include: - 400 Series Strip / Fixed Windows - 325 Series Fixed Windows [ Talk to a Specialist ](tel:1-866-566-5656) ![Inline Fiberglass 400 Series strip fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/405SERIESB_vector-1920w-1024x1024.webp "405+SERIES+B_vector-1920w - Inline Fiberglass - Inline Fiberglass") ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## Best for Modern Design Choose window systems with clean lines, minimal sightlines, and flexible sizing. Good options include: - 400 Series Strip Windows - 300 Series Tilt & Turn Windows - 325 Series Fixed Windows - 700 Series Casement / Hopper Windows [ Compare Venting Window Options ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## Best for Traditional Homes Choose window styles that match familiar residential architecture while upgrading the frame material to fiberglass. Good options include: - 850 Series Single Hung Windows - 900 Series Double Hung Windows - 325 Series Casement Windows - SDL and flat bar design options where applicable [ Request a Window Recommendation ](https://inlinefiberglass.com/contact/) ![Inline Fiberglass 400 Series strip fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/405SERIESB_vector-1920w-1024x1024.webp "405+SERIES+B_vector-1920w - Inline Fiberglass - Inline Fiberglass") ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## Best for High-Performance Projects For Passive House, PHIUS, commercial, or other high-performance projects, product selection should be confirmed by series, glass package, configuration, and documentation. PHIUS certification applies only to specific products and configurations, including 325 SER CSM/AWN/FXD, 400 SER, and 3000 SER TNT/FXD. PHI certification applies to 3000 SER TNT/FXD. Inline can help architects, builders, and homeowners identify the right product path and request the correct technical documents. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Inline's Custom Fiberglass Window Options Inline fiberglass windows can be configured for different project needs. For an accurate recommendation, share your project location, window type, plans, preferred style, and performance goals. [ View Our Window Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) **Ask Inline about:** - Double-glazed and triple-glazed options by product series and configuration - Interior and exterior colour flexibility - Custom colour needs - Standard and oversized product options - SDL and flat bar options where applicable - Fixed, operable, and combination window layouts - Product drawings and technical documents - Performance data by product and configuration - High-performance and Passive House project suitability by certified product and configuration [ View Our Window Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) ## See Fiberglass Windows in Real Projects Explore how Inline fiberglass windows are used across residential, commercial, and high-performance projects throughout a variety of applications. All Residential Projects Commercial Projects Passive House / High-Performance [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Fiberglass-Windows-Doors-Engineered-in-Canada-20.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Fiberglass-Windows-Doors-Engineered-in-Canada-20.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-25.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-25.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-08.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-08.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-09.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-09.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-07.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-07.jpeg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-20.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-20.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-003.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-003.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-06.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-06.jpeg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/850-series-01.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/850-series-01.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-05.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-05.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-19.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-19.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-04.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-04.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-04.j10peg.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-04.j10peg.jpeg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-03.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-03.jpeg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-14.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-14.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-01.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-01.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-16.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-16.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-21.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-21.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-12.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-12.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-400-series-04.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-400-series-04.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-18.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-18.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-15.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-15.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-14.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-14.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-04.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-04.jpg) ## Need Specs, Drawings, or Certification Details? Inline can help you access the product information needed to evaluate the right fiberglass window series for your project. Request support for: - Product specs - Technical drawings - Glass configuration details - Certification scope by product and configuration - PHIUS / PHI applicability - EPD documentation for applicable products - Commercial project support - Custom sizing and configuration questions [ Download Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## How to Start Your Fiberglass Window Project You do not need to know every product detail before reaching out. Tell us about your project, and our team will help you move in the right direction. ## 01 ## Tell Us About Your Project Share your project type, location, timeline, window requirements, and any drawings, plans, photos, specifications, or supporting details available. ## 02 ## We Help Identify the Right Window Path Inline reviews your needs and helps route you toward the right window series, quote path, showroom visit, dealer support, or technical document request. ## 03 ## You Get the Right Next Step Depending on your project, the next step may be a quote, showroom visit, product comparison, or technical consultation. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Fiberglass Windows Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Which Inline fiberglass window series is best? It depends on your project. For ventilation and easy cleaning, start with the 300 Series Tilt & Turn or 700 Series Casement / Hopper. For large glass and modern fixed openings, review the 400 Series or 325 Fixed options. For traditional residential styling, review the 850 Single Hung or 900 Double Hung series. For a practical everyday casement window, review the 325 Casement series. Are fiberglass windows energy efficient? Yes, fiberglass windows are commonly chosen for energy-efficient window projects because fiberglass supports strength, durability, and thermal performance. Final performance depends on the window series, glass package, size, configuration, and installation details. Should I choose double pane or triple pane fiberglass windows? Double pane may be suitable for many residential projects. Triple pane may be a better fit when the project needs higher thermal performance, more comfort, or stronger high-performance building goals. Inline can help confirm the right glass package for your project. Can Inline fiberglass windows be customized? Inline offers several window styles, series, glass options, and design options. Colour, sizing, SDL, flat bar, and configuration options may vary by series and project requirements. Share your plans or photos so the Inline team can confirm what is available. Do you offer fiberglass windows in Toronto? Inline Fiberglass is based in Toronto / Etobicoke, with a showroom at 30 Constellation Crt, Etobicoke, ON M9W 1K1. The showroom is open Monday–Friday, 8:30am–5:00pm, and Saturdays, 10:00am–2:00pm, except holidays. Visitors outside the local area can contact Inline to confirm the right quote, installation, or dealer-supported path. Do Inline fiberglass windows support Passive House projects? Select Inline products support Passive House or high-performance building needs. PHIUS certification applies to 325 SER CSM/AWN/FXD, 400 SER, and 3000 SER TNT/FXD. PHI certification applies to 3000 SER TNT/FXD. Certification scope should always be confirmed by product, series, glass package, configuration, and project requirements before specifying. Does Inline install fiberglass windows? Yes. Inline has its own installers and offers turnkey replacement service, including removal of existing windows and installation of new products tailored to the project. For projects outside Inline’s direct service area, contact Inline to confirm the right installation, dealer, or contractor-supported path. Which window is best for large glass openings? For large glass, fixed openings, and clean sightlines, review the 400 Series Strip / Fixed Windows and 325 Fixed Windows. Which window is best for ventilation? For strong ventilation, review the 300 Series Tilt & Turn, 700 Series Casement / Hopper, 325 Casement, 325 Awning, 800 Horizontal Slider, 850 Single Hung, and 900 Double Hung series. The best choice depends on how you want the window to open. Can I download product specs? Yes. Architects, builders, and project teams can request product specs, drawings, and technical documents to help evaluate the right fiberglass window system. How do I get a quote? Use the Request a Free Quote form and include your project location, window type, timeline, and any plans or photos you have. Inline will review your request and help route you to the right next step. ## Ready to Find the right Fiberglass Windows? Tell us about your project and we’ll help identify the right Inline fiberglass window solution. From custom homes to architectural specifications, our team can provide product guidance, technical support, and next-step recommendations. [ Start a Project Today ](https://inlinefiberglass.com/contact/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Options](https://inlinefiberglass.com/products/fiberglass-windows/options/) **Published:** June 8, 2026 **Author:** anthony@webhaven.ca **Content:** # Glass, Colours, Grilles & Hardware Options for Fiberglass Windows Inline Fiberglass offers a range of glass packages, colours, grilles, trim, screens, and hardware options to help homeowners, architects, builders, and commercial teams choose the right finish for the job. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ Explore Options ](#options) ## Your windows should fit the way your project looks, performs, and functions. From semi-standard dark finishes such as Tricorn Black and Iron Ore to custom colours, double or triple pane glass, Low-E coating options, and grille/SDL options confirmed during product selection, our team can help you understand which options make sense for your window series, building style, and performance goals. - Standard White, semi-standard, and custom colour options - Double and triple pane glass packages - SDL and grille options for traditional or architectural styles - Finish and accessory support by product series [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Choose the Right Options for Your Project The 325 Series combines fiberglass construction, premium hardware, energy-efficient glass options, and flexible finish choices for a wide range of residential and commercial projects. ### Colours & Finishes Inline’s standard colour is White. Semi-standard colour options include Commercial Brown, Almond, Brownstone, Slate, Tricorn Black, and Iron Ore. Anything else is custom, and Inline has confirmed it can do any colour. Confirm colour selection, finish, and any project-specific requirements during quoting. **Best for:** modern homes, dark exterior palettes, custom builds, architectural projects, and colour-matched renovations. [ More About Our Colours ](#colours-options) ### Grilles & SDL Bars Grilles and simulated divided lites help create a traditional, heritage, or more detailed architectural appearance without needing separate individual glass panes. **Best for:** traditional homes, heritage-style projects, custom elevations, and design-led residential work. [ More About Our Grills & SDL Bars ](#grills-sdl-options) ### Glass Packages Choose glass based on comfort, efficiency, orientation, and project requirements. Inline can offer double pane and triple pane glass, with Low-E coating options including 180, 272, 366, and i89. Confirm the right glass package for the selected window series and performance target. **Best for:** energy-conscious homes, Passive House and high-performance projects, commercial buildings, and comfort-focused renovations. [ More About Our Glass Options ](#glass-options) ### Hardware & Accessories Hardware, screens, extenders, trim, casing, jamb extensions, and other accessories help complete the finished window system. Availability can vary by series, size, and configuration. **Best for:** projects where appearance, fit, operation, and finishing details matter. [ More About Hardware & Accessories ](#hardware-accessories) ## Custom Colours, Including Black and Dark Finishes Fiberglass gives design teams flexibility for colour selection, with standard colours and additional custom colours available by request. This is especially useful when the exterior design calls for a specific architectural colour, including darker semi-standard options such as Tricorn Black or Iron Ore. Colour samples are available for showroom review. Visitors can use the showroom visit as a secondary step after exploring colour options or starting a quote request. Inline offers standard colour choices and custom colour matching for projects that need a specific architectural look. Popular finish directions may include: - White standard finish - Commercial Brown semi-standard finish - Almond semi-standard finish - Brownstone semi-standard finish - Slate semi-standard finish - Tricorn Black semi-standard finish - Iron Ore semi-standard finish - Custom colours available by request [ View Our Colour Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) ## Custom Window Grilles and SDL Bars Grilles can change the entire character of a window. They can make a new window feel more traditional, more architectural, or more consistent with an existing home. SDL bars are a strong fit for: - Heritage-style homes - Traditional elevations - Farmhouse-style projects - Custom residential builds - Architectural projects with repeated window patterns - Projects where exterior detail matters For cleaner modern projects, many buyers choose no grilles at all. For traditional homes, SDLs can help the new windows feel more appropriate to the design. [ View Our Grille and SDL Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/window-grilles-and-sdl-bars/) ## Comfort, Efficiency, and Project Performance The glass package is one of the most important decisions in a fiberglass window project. It affects insulation, solar gain, visible light, condensation resistance, and overall comfort. Inline fiberglass windows can support different insulated glass unit configurations depending on the series and project need. Options may include: - Double pane insulated glass - Triple pane insulated glass - Low-E coating options: 180, 272, 366, and i89 For homeowners, this means better comfort and energy-conscious performance. For architects and builders, it means clearer product conversations around U-value, solar heat gain, visible transmittance, and documentation. [ View Our Glass Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) ## Hardware, Screens, Trim, and Finishing Details The frame colour and glass package are only part of the decision. The finishing details matter too. Depending on the window series and project requirements, available options may include: - Screen options - Exterior trim profiles - Brickmould-style trim - J-channels - Interior casing - Jamb extensions - Project-specific accessory details These options help the finished window work with the wall assembly, siding, interior drywall, exterior style, and daily use. **Important:** Hardware, grille, and accessory availability can vary by product series. Inline should confirm the right options during the quote or product-selection process. ## Premium Options for a More Complete Window System Window options are not just decorative. The right glass, colour, grille, and hardware choices affect comfort, appearance, maintenance, energy performance, and long-term satisfaction. Inline Fiberglass focuses on fiberglass window and door systems. That means our options are designed around the strengths of fiberglass: dimensional stability, paintability, durability, and long-term performance. Whether you are matching a modern black exterior, preserving a heritage divided-lite look, choosing a high-performance glass package, or coordinating trim details, Inline can help you narrow the choices before you Request a Free Quote. [ Talk to a Specialist ](tel:1-866-566-5656) ## Factory-Applied Finishes Built for Long-Term Use A window finish needs to do more than look good on day one. It needs to hold up against sunlight, weather, handling, and daily use. Inline’s finish process includes applied finishes for fiberglass frames. AAMA-related coating language should only be used where it refers to applied finishes. For design-driven projects, this matters. A poorly chosen colour or finish can weaken the look of the entire building. The right finish can make the windows feel intentional, integrated, and premium. Design Tip: For dark window frames, confirm the exterior colour, interior colour, hardware, screens, and trim together. These details should be selected as a system, not as separate afterthoughts. [ Talk to a Specialist ](tel:1-866-566-5656#) ## Not Sure Which Options You Need? Start with the purpose of the project. ### If your priority is energy performance Ask about double pane or triple pane glass, Low-E coating options including 180, 272, 366, and i89, and product-specific performance data. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ### If your priority is design Start with colour, grille style, sightlines, and interior/exterior finish coordination. [ Book a Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) ### If your priority is matching an existing home Bring photos of the current windows, exterior finishes, trim, and interior wall details. Inline can help you compare colour, grille, casing, and accessory options. [ Start a Quote Request ](https://inlinefiberglass.com/request-a-quote/) ### If your priority is a commercial or architectural specification Ask for product documentation, glass options, finish details, drawings, and certification information for the specific window series being considered. [ Request Spec Support ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Explore Fiberglass Windows, Doors, and High-Performance Products Choose the product path that fits your project. Inline offers fiberglass window and door products for residential, commercial, architectural, and dealer-supported applications. ## For Homeowners Choose colours, glass, screens, and grilles that support comfort, curb appeal, and long-term value. ## For Architects & Specifiers Review finish options, glass packages, SDL details, and documentation before finalizing a specification. ## For Builders & Contractors Confirm series availability, trim details, rough opening requirements, finish choices, and lead-time considerations before ordering. ## For Commercial Projects Coordinate glass performance, frame colour, maintenance expectations, and documentation with the broader building envelope plan. ## Common Questions About Window Options Find clear answers to common questions about fiberglass windows product options. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Can Inline match custom fiberglass window colours? Yes. Inline can do any colour. White is the standard colour. Semi-standard colours include Commercial Brown, Almond, Brownstone, Slate, Tricorn Black, and Iron Ore. Anything else is custom and should be confirmed during quote review. Are black fiberglass windows available? Yes. Tricorn Black and Iron Ore are listed as semi-standard colour options. Other black or dark colour requests may be handled as custom colours and should be confirmed during quote review. What glass options are available? Inline can offer double pane and triple pane glass, with Low-E coating options including 180, 272, 366, and i89. Ask Inline for product-specific glass and performance details before finalizing your selection. What are SDL bars? SDL stands for simulated divided lite. SDL bars are applied to create the look of individual panes while allowing the window to use a continuous insulated glass unit. Are grilles available for modern and traditional homes? Yes. Some projects use grilles or SDLs for a traditional or heritage look. Others use clean glass with no grilles for a more modern appearance. The right choice depends on the home style and design goal. Can I choose different colours inside and outside? Split-finish options may be available for projects that need one exterior colour and a different interior finish. This is useful when the outside calls for a bold colour while the inside needs to match interior trim or décor. Are all hardware options available on every window series? No. Hardware and accessory options can vary by window series, size, and configuration. Contact Inline to confirm available hardware during product selection. Should I choose double pane or triple pane glass? It depends on your comfort goals, budget, building design, climate, and performance requirements. Inline can offer both double pane and triple pane glass. The right choice should be confirmed based on the selected window series, Low-E coating option, and project needs. ## Ready to Choose Your Window Options? Tell Inline about your project, and the team will help you review the options that fit your window series, design goals, and performance needs. [ Book a Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Fiberglass window glass options](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-glass-options/) **Published:** September 21, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Window & Door Glass Options Inline Fiberglass offers double- and triple-pane insulating glass configurations, IGMAC-certified glass units and a range of Low-E coating options. Our team can help you compare available glass packages and determine the appropriate configuration for your selected window series and project requirements. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ Explore Glass Options ](#glass-configuration) ## Glass Plays a Major Role in How a Window Performs The frame is only one part of a high-performing window. The glass package can have a significant effect on thermal comfort, energy efficiency, condensation resistance and the overall performance of the finished window. Inline offers different glazing configurations and Low-E coatings to support a range of residential, commercial and high-performance projects. From everyday residential applications to projects with more demanding energy targets, the appropriate glass package should be selected alongside the window series, size, configuration and overall building requirements. [ Explore Glass Options ](#glass-configuration) [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## Choose the Right Glass Configuration for Your Project Different projects place different demands on their windows. Inline offers both double- and triple-pane options across applicable product series, allowing the glazing package to be selected around the project’s performance requirements. ![Isometric view of a glass partition panel mounted in a frame with a bottom track and side rails](https://inlinefiberglass.com/wp-content/uploads/2026/09/inline-fiberglass-glass-double-pan-option-1024x1024.png "inline-fiberglass-glass-double-pan-option - Inline Fiberglass - Inline Fiberglass") ## Double-Pane Glass Double-pane insulating glass uses two panes of glass to create an insulated glass unit and can be an appropriate choice for many residential and commercial applications. Available configurations can be paired with Low-E coatings to help address the project’s energy performance, solar control and comfort requirements. Depending on the window series and configuration, double-pane glass can provide a practical balance of thermal performance, natural light and overall project requirements. **Best suited for:** Projects where a balanced combination of performance, application and project requirements is the priority. ![Three transparent glass panels in a metal frame forming a sliding partition in a bottom track (isometric view)](https://inlinefiberglass.com/wp-content/uploads/2026/09/inline-fiberglass-glass-triple-pan-1024x1024.png "inline-fiberglass-glass-triple-pan - Inline Fiberglass - Inline Fiberglass") ## Triple-Pane Glass Triple-pane insulating glass adds a third pane and an additional insulating space to the glass unit, supporting higher levels of thermal performance. Triple glazing can be particularly valuable for projects focused on improved thermal comfort, energy efficiency or high-performance building objectives. ENERGY STAR performance is available across Inline’s triple-glazed products, with select Inline series capable of meeting ENERGY STAR Most Efficient criteria when appropriately configured. **Best suited for:** High-performance homes, demanding climates and projects where enhanced thermal performance is an important design objective. Double- and triple-pane availability varies by Inline window series and configuration. Final glass packages, performance values and certification eligibility should always be confirmed for the specific product, unit size and project requirements. ## Control More Than the Temperature Low-emissivity—or Low-E—coatings help control how heat and solar energy move through a window. Inline offers several Low-E options, including 180, 272, 366 and i89, allowing the glass package to be selected around thermal performance, solar heat gain, daylight and overall building design. ### Low-E 180 ### Higher Solar Heat Gain Low-E 180 is designed to allow comparatively more solar heat through the glass while still providing Low-E performance. This can make it useful in applications where passive solar gain is desirable. Cardinal classifies LoĒ-180 as its high solar gain glass option. **Consider for:** Projects where higher solar heat gain is part of the glazing strategy. ### Low-E 272 ### Balanced Solar Performance Low-E 272 provides a balance between natural light, solar heat gain and insulating performance. Cardinal categorizes LoĒ²-272 as a moderate solar gain product, making it an option for projects looking for a more balanced glazing approach. **Consider for:** Applications requiring a balance of daylight, solar control and energy performance. ### Low-E 366 ### Greater Solar Control Low-E 366 is designed to provide stronger solar control, helping reduce the amount of solar heat entering through the glass while maintaining natural light. Cardinal categorizes LoĒ³-366 as an ultimate solar control glass option. **Consider for:** Projects where limiting unwanted solar heat gain is an important part of the glazing strategy. ### Low-E i89 ### Room-Side Thermal Performance Unlike the other coatings, i89 is designed for application to the room-side surface of an insulating glass unit and can be combined with other Low-E coatings to further improve insulating performance. Cardinal identifies LoĒ-i89 specifically as a room-side U-factor efficiency option. **Consider for:** Projects looking to enhance the insulating performance of an appropriate glass configuration. ### Low-E Selection Note The appropriate Low-E coating depends on more than the window itself. Building orientation, climate, window area, desired solar heat gain, glass configuration and project performance requirements can all influence the selection. Inline can help confirm available Low-E configurations for the selected window series and project. [ Speak with a Specialist ](https://inlinefiberglass.com/contact) ## IGMAC-Certified Glass Units for Long-Term Performance The insulating glass unit is a critical component of window performance. It influences energy efficiency, thermal comfort, condensation resistance and long-term durability. All Inline products use IGMAC-certified insulating glass units. IGMAC certification provides an established quality framework for insulating glass units and supports reliable glass-unit performance across Inline’s fiberglass window and door systems. ## Match the Glass Package to the Performance Goal For projects with more demanding energy-performance requirements, glazing needs to be considered as part of the complete window system. **Inline offers ENERGY STAR performance across all triple-glazed products and select double-glazed products.** Eligibility depends on the product, glass package and configuration, so the appropriate glazing specification should be confirmed for each project. Select Inline products also carry PHIUS and PHI certifications for Passive House and high-performance applications. These certifications apply only to specific products and configurations, so glass selection should always be reviewed alongside the complete window system and applicable technical documentation. [ Explore Certifications & Testing ](https://inlinefiberglass.com/about/certifications-testing/) ## What Should You Consider When Choosing Window Glass? The right glass package depends on how the window needs to perform within the building. Thermal performance, solar heat gain, natural light, condensation resistance and project-specific requirements should all be considered alongside the selected window series and configuration. ### Thermal Performance The glass package plays an important role in controlling heat transfer through the window and supporting interior comfort throughout the year. ### Solar Heat Gain Different Low-E coatings allow different amounts of solar energy through the glass. The right level depends on climate, orientation and the overall building strategy. ### Natural Light Glass selection can influence how much visible light enters a space. Performance requirements should be balanced with daylight and architectural goals. ### Condensation Resistance The complete window and glass configuration can affect interior surface temperatures and condensation resistance, particularly in colder conditions. ### Project Requirements Energy targets, building codes, certification goals and project specifications may influence which glass packages are appropriate. ### Window Series & Configuration Not every glazing option is available with every Inline product. Unit size, operating style and window series all need to be considered before the final glass package is specified. ## Selecting Your Glass Package ## 1. Start With the Project Tell us whether you’re planning a replacement, renovation, custom home, commercial building or high-performance project. ## 2. Choose Your Window Series Glass availability and performance can vary by window series, size and configuration. ## 3. Establish Your Performance Goals Consider comfort, energy efficiency, solar control, natural light and any certification or project-specific requirements. ## 4. Compare Glass & Low-E Options Inline can help you compare available double- or triple-pane packages and applicable Low-E coatings. ## 5. Confirm the Final Specification Before ordering or specifying, confirm the complete glass package, product configuration and applicable performance documentation with Inline. [ Start Your Project Today ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Fiberglass Window and Door Glass Options Find clear answers to common questions about fiberglass window and door glass options. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Does Inline offer double- and triple-pane glass? Yes. Double- and triple-pane insulating glass configurations are available across applicable Inline window series. Availability depends on the particular product, size and configuration. What Low-E glass options does Inline offer? Inline identifies Low-E 180, 272, 366 and i89 among its available coating options. The appropriate coating depends on the glass configuration and project performance requirements. Is triple-pane glass always the better choice? Not necessarily. Triple glazing can provide higher thermal performance, but the appropriate choice depends on the window series, climate, project goals, budget and required performance. Double glazing may be suitable for many applications. Are Inline's glass units IGMAC certified? Yes. All Inline products use IGMAC-certified insulating glass units. Are Inline's triple-glazed windows ENERGY STAR rated? ENERGY STAR performance is available across all Inline triple-glazed products and select double-glazed products. Eligibility depends on the product, glass package and configuration, so the appropriate glazing specification should be confirmed for each project. Can Inline help me choose the right glass? Yes. Glass selection should account for the window series, configuration and project performance requirements. Inline can help review the available glazing packages and provide applicable product information and technical documentation. ## Find the Right Glass for Your Project Whether you’re choosing windows for a home, commercial building or high-performance project, Inline can help you compare glass configurations, Low-E coatings and product-specific performance options. [ Book a Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Fiberglass Window Colours & Finishes](https://inlinefiberglass.com/products/fiberglass-windows/options/fiberglass-window-colours-finishes/) **Published:** September 17, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Window & Door Colours & Finishes From classic White to contemporary dark finishes and custom colour matching, Inline Fiberglass offers flexible colour options for residential, commercial and architectural projects. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ Explore Colours ](#swatches) ## Colour Options Designed Around Your Project Colour can completely change how a window relates to the architecture around it. A subtle finish can allow the frame to blend naturally into the building, while a darker or contrasting colour can turn the window into a defining architectural element. Inline offers standard, semi-standard and custom colour options, with the flexibility to coordinate window finishes with exterior cladding, trim, interior materials and the overall design direction of your project. Our team can help you review your colour requirements and confirm the appropriate finish options for your selected window or door system. [ Explore Our Colours ](#swatches) [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## Choose the Right Finish for Your Design The right finish should complement the architecture and coordinate naturally with the materials around it. Choose from Inline’s standard White, a selection of semi-standard colours, or custom colour matching to create the right look for your project. ![](https://inlinefiberglass.com/wp-content/uploads/2026/09/inline-colours-white.jpg "inline-colours-white - Inline Fiberglass - Inline Fiberglass") ## Standard Colour ## White A clean, versatile finish that works across traditional, transitional and contemporary architecture. ![Solid dark brown background with no objects.](https://inlinefiberglass.com/wp-content/uploads/2026/09/inline-colours-commercial-brown.jpg "inline-colours-commercial-brown - Inline Fiberglass - Inline Fiberglass") ## Semi-Standard Colours ## Commercial Brown A deep, warm neutral that provides strong contrast while maintaining a traditional architectural character. ![Decorative beige solid color background (no informative content)](https://inlinefiberglass.com/wp-content/uploads/2026/09/inline-colours-almond.jpg "inline-colours-almond - Inline Fiberglass - Inline Fiberglass") ## Semi-Standard Colours ## Almond A softer, warmer alternative to White that pairs naturally with cream, beige and other light exterior finishes. ![Solid taupe background color (no objects visible).](https://inlinefiberglass.com/wp-content/uploads/2026/09/inline-colours-brownstone.jpg "inline-colours-brownstone - Inline Fiberglass - Inline Fiberglass") ## Semi-Standard Colours ## Brownstone An earthy neutral suited to projects incorporating masonry, natural materials and warmer exterior palettes. ![Solid gray placeholder image with no content.](https://inlinefiberglass.com/wp-content/uploads/2026/09/inline-colours-slate.jpg "inline-colours-slate - Inline Fiberglass - Inline Fiberglass") ## Semi-Standard Colours ## Slate A muted grey finish that offers a restrained, architectural appearance for both traditional and contemporary designs. ![Solid black background used as a page backdrop](https://inlinefiberglass.com/wp-content/uploads/2026/09/inline-colours-tricorn-black.jpg "inline-colours-tricorn-black - Inline Fiberglass - Inline Fiberglass") ## Semi-Standard Colours ## Tricorn Black A bold black finish that creates crisp definition around window openings and complements modern architectural palettes. ![Solid dark gray background.](https://inlinefiberglass.com/wp-content/uploads/2026/09/inline-colours-Iron-Ore.jpg "inline-colours-Iron-Ore - Inline Fiberglass - Inline Fiberglass") ## Semi-Standard Colours ## Iron Ore A deep charcoal finish that provides much of the visual impact of black with a slightly softer overall appearance. Colour and finish availability may vary by window or door series, configuration and project requirements. Standard, semi-standard, custom and split-finish selections should be confirmed with Inline during the quotation process. Colour representations shown online may vary from the appearance of the actual finish. Review physical samples when precise colour selection is important. [**Book a showroom visit today.**](https://inlinefiberglass.com/book-showroom-visit/) ## Have Another Colour in Mind? We Offer Custom Colour Matching Sometimes the right colour isn’t part of a predefined palette. Inline Fiberglass can accommodate custom colour requests for projects that require a specific architectural finish. This gives homeowners, architects, builders and designers greater flexibility when coordinating windows and doors with exterior cladding, masonry, roofing, trim or other project-specific materials. Whether the goal is a subtle colour match or a distinctive architectural statement, provide Inline with your desired colour direction and our team can help confirm the finish requirements during the quotation process. Discuss a Custom Colour ## Different Design Outside. Different Requirements Inside. The colour that works best for the exterior of a building isn’t always the colour that works best inside. Split-finish options may be available for projects requiring one colour on the exterior and another on the interior. This allows a darker exterior frame, for example, to coordinate with contemporary cladding while a lighter interior finish works naturally with walls, trim and interior materials. When planning a split finish, Inline can help confirm the available colour combinations for the selected product and configuration. [ Talk to a Specialist ](https://inlinefiberglass.com/contact) [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## Designed for More Than Appearance A window finish has to do more than complement the architecture. It also needs to perform through exposure to sunlight, changing weather conditions, handling and everyday use. Inline applies finishes to its fiberglass window and door systems with durability and long-term performance in mind. ## Custom Colour Matching Choose a specific colour to coordinate the window system with the broader project palette. ## Durable Finishes Factory-applied finishes combine architectural appearance with the durability expected from a finished fiberglass window or door system. ## AAMA-Certified Paint Applicator Inline is an AAMA-certified paint applicator, supporting a controlled approach to applied finish quality and performance. ## Consider the Complete Building, Not Just the Frame Window colour works best when it is considered alongside the other materials and details of the project. Before making your final selection, consider: - **Exterior materials:** siding, stucco, masonry, roofing and architectural trim. - **Interior finishes:** wall colours, millwork, flooring and interior trim. - **Hardware and accessories:** coordinate hardware, screens and other visible components with the frame. - **Grilles and SDLs:** coordinate divided-lite details with the frame finish and overall architectural design. - **Architectural style:** decide whether the windows should blend into the elevation or create intentional contrast. - **Interior and exterior coordination:** determine whether one colour works throughout or whether a split finish better supports the design. ## A Simple Selection Process ## 1. Share Your Design Direction Provide plans, elevations, renderings, inspiration images, material samples or photographs of the existing building. ## 2. Select Your Window or Door System Identify the Inline window or door series and configuration being considered for your project. ## 3. Explore Standard, Semi-Standard & Custom Colours Compare the available finishes against your exterior and interior design palette. ## 4. Coordinate the Details Consider interior and exterior colours alongside hardware, screens, grilles, SDLs and surrounding materials. ## 5. Confirm Your Finish Inline will help confirm the final colour requirements before the selected options are included in your project quotation. [ Start Your Project Today ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Fiberglass Window and Door Colours Find clear answers to common questions about fiberglass window and door colour options. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What is Inline's standard window and door colour? White is Inline Fiberglass’ standard colour. Which semi-standard colours are available? Our semi-standard colours are Commercial Brown, Almond, Brownstone, Slate, Tricorn Black and Iron Ore. Can Inline match a custom colour? Yes. Inline offers custom colour matching for projects requiring a colour outside the standard and semi-standard selections. Custom requirements should be confirmed during the quotation process. Are black fiberglass windows available? Yes. Tricorn Black and Iron Ore are available as semi-standard dark finish options. Other black or dark colour requests can be discussed as custom colours. Can I have different colours on the inside and outside? Split-finish options may be available when a project requires one exterior colour and a different interior finish. Availability should be confirmed for the selected product and configuration. Can I see colour samples before ordering? Yes. Inline colour samples are available for showroom review, which is particularly useful when coordinating the windows with other architectural materials. Do window grilles and SDL bars come in different colours? Finish and colour availability for grille and SDL profiles varies by window series and application. Inline recommends confirming profile and finish compatibility before finalizing the design. ## Find the Right Colour for Your Project Whether you’re selecting a classic White finish, introducing a dark architectural frame or matching a specific project colour, Inline can help you coordinate the finish with your window system and overall design. [ Book a Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Dealers](https://inlinefiberglass.com/dealers/) **Published:** June 19, 2026 **Author:** anthony@webhaven.ca **Content:** # Authorized Inline Fiberglass Dealers in Ontario Find an authorized Inline Fiberglass dealer in Ontario for local product guidance, quote support, and help choosing the right fiberglass windows or doors for your project. [ View Dealer Details ](#dealer-details) [ View Map of Dealers ](#dealers-map) ## Authorized Inline Fiberglass Dealer Locations Inline Fiberglass products are available through authorized dealer locations in Canada and the United States. Use the list below to find the dealer closest to your project. ## Fendor Glass & Aluminum **City:** Ottawa, Ontario **Address:** 46 Auriga Dr, Ottawa, ON, K2E 7Y3, Canada **Phone:** (613) 722 6581 Ext. 5006 **Dealer Type:** Authorized Inline Fiberglass dealer Fendor Glass & Aluminum Inc. offers quality windows and entry doors and expert installation services. We welcome both commercial and residential customers. [ Contact Ottawa Dealer ](https://ecoottawawindowsanddoors.ca/contact/) ## Schell Lumber Home Building Centre **City:** Whitchurch-Stouffville, Ontario **Address:** 33 Edward St, Whitchurch-Stouffville, ON L4A 7Z6, Canada **Phone:** (905) 640-3440 **Dealer Type:** Authorized Inline Fiberglass dealer Schell Lumber is a family-owned Home Hardware Building Centre serving Stouffville, Sutton, and the GTA since 1922. [ Contact Stouffville Dealer ](https://schelllumber.com/) ## The Window Centre **City:** Kingston, Ontario **Address:** 15 Binnington Court, Kingston, ON K7M 8M9, Canada **Phone:** (613) 546-2221 **Dealer Type:** Authorized Inline Fiberglass dealer The Window Centre supports Kingston-area customers with Inline Fiberglass product inquiries, quote support, and local project coordination. [ Contact Kingston Dealer ](https://www.thewindowcentre.ca/contact-us) ## Northwood Windows & Doors **City:** North Bay, Ontario **Address:** 1030 Lakeshore Drive, North Bay, Ontario P1A 2H3, Canada **Phone:** (705) 497-9137 **Dealer Type:** Authorized Inline Fiberglass dealer Northwoods focus is on building lasting customer relationships, by providing quality window and door products, and expert installation services. [ Contact North Bay Dealer ](https://northwoodwindows.com/contact) ## The Nest **City:** Trent Lakes, Ontario **Address:** 269 Main Street, Trent Lakes, ON K0M 1A0, Canada **Phone:** (705) 991-6378 **Dealer Type:** Authorized Inline Fiberglass dealer The Nest supports customers in the Trent Lakes region who are exploring Inline Fiberglass products for residential, cottage, renovation, and custom project needs. [ Contact Trent Lakes Dealer ](https://www.thenestpros.ca/contact) ## Inline Muskoka **City:** Muskoka, Ontario **Address:** Port Sandfield, Muskoka Lakes, ON P0B 1J0, Canada **Phone:** 1-866-566-5656 **Dealer Type:** Authorized Inline Fiberglass dealer Inline Fiberglass makes premium fiberglass windows, entrance doors, and sliding patio doors for homes, commercial buildings, and high-performance building needs. [ Contact Muskoka Dealer ](https://inlinefiberglass.com/contact/) ## Performance Exteriors (Windsor) **City:** Windsor, Ontario **Address:** 357 Croft Dr, Windsor, ON N8N 2L9, Canada **Phone:** 1-866-501-9744 **Dealer Type:** Authorized Inline Fiberglass dealer Professional exterior design and installation for homeowners, builders, architects, and commercial clients throughout Windsor-Essex County and surrounding areas. [ Contact Windsor Dealer ](https://www.performance-exteriors.com/windsor-essex) ## Performance Exteriors (London) **City:** London, Ontario **Phone:** 1-866-501-9744 **Dealer Type:** Authorized Inline Fiberglass dealer Professional exterior design and installation for homeowners, builders, architects, and commercial clients throughout Windsor-Essex County and surrounding areas. [ Contact London Dealer ](https://www.performance-exteriors.com/windsor-essex) ## Duxton Windows **Location:** Winnipeg, Manitoba **Address:** 45 Higgins Avenue, Winnipeg, MB R3B 0A8, Canada **Phone:** (204) 339-6456 **Dealer Type:** Authorized Inline Fiberglass dealer Duxton Windows supports customers in Winnipeg and surrounding Manitoba markets with Inline Fiberglass product inquiries and project support. [ Contact Winnipeg Dealer ](https://www.duxtonwindows.com/contact-us/) ## Cascadia Windows **Location:** Sechelt, British Columbia **Address:** 5350B 101, Sechelt, BC V7Z 0C4, Canada **Phone:** (604) 885-4240 **Dealer Type:** Authorized Inline Fiberglass dealer Cascadia Windows supports British Columbia customers looking for Inline Fiberglass windows, doors, and high-performance product options. [ Contact Sechelt Dealer ](https://www.cascadiawindows.com/contact) ## Les Entreprises Visifib **Location:** Lanoraie, Quebec **Address:** Lanoraie, QC, Canada **Phone:** 450-803-2657 **Dealer Type:** Authorized Inline Fiberglass dealer Les Entreprises Visifib supports Quebec-area customers with Inline Fiberglass product inquiries and dealer-supported project routing. [ Contact Lanoraie Dealer ](https://www.visifib.ca/fr/contact/) ## Ultimate Windows & Doors LTD **Location:** Fredericton, New Brunswick **Address:** 600 Alison Boulevard, Fredericton, NB E3C 2G2, Canada **Phone:** (506) 472-4555 **Dealer Type:** Authorized Inline Fiberglass dealer Ultimate Windows & Doors LTD supports Fredericton and surrounding New Brunswick markets with Inline Fiberglass product inquiries and quote routing. [ Contact Fredericton Dealer ](https://www.ultimatewindows.ca/contact) ## Great Land Windows **Location:** Fairbanks, Alaska **Address:** 2333 Van Horn Road, Fairbanks, AK 99701, United States **Phone:** (907) 479-8437 **Dealer Type:** Authorized Inline Fiberglass dealer Great Land Windows supports Alaska customers with Inline Fiberglass product inquiries and local project coordination. [ Contact Fairbanks Dealer ](https://www.greatlandwindow.com/Contact.html) ## Alpen Windows **Location:** Louisville, Colorado **Address:** 335 Centennial Parkway, Louisville, CO 80027, United States **Phone:** +1 800-882-4466 **Dealer Type:** Authorized Inline Fiberglass dealer Alpen Windows supports Colorado-area customers with Inline Fiberglass window and door inquiries, including high-performance project needs. [ Contact Louisville Dealer ](https://www.thinkalpen.com/request-a-quote) ## Majic Windows **Location:** Wixom, Michigan **Address:** 30580 Beck Road, Wixom, MI 48393, United States **Phone:** (248) 668-9090 **Dealer Type:** Authorized Inline Fiberglass dealer Majic Windows supports customers in Wixom and surrounding Michigan markets with Inline Fiberglass product inquiries and dealer-supported next steps. [ Contact Wixom Dealer ](https://www.majicwindow.com/contact/) ## Ferguson Industries **Location:** Orland Park, Illinois **Address:** 16065 Lagrange Road Trail, Orland Park, IL 60467, United States **Phone:** (708) 478-6000 **Dealer Type:** Authorized Inline Fiberglass dealer Ferguson Industries supports Orland Park and surrounding Illinois markets with Inline Fiberglass product inquiries and local project support. [ Contact Orland Park Dealer ](https://fergusondws.com/contact/) ## Level 5 Exteriors **Location:** Yorkville, Illinois **Address:** Yorkville, IL, United States **Phone:** (630) 446-9022 **Dealer Type:** Authorized Inline Fiberglass dealer Level 5 Exteriors supports Yorkville-area customers with Inline Fiberglass product inquiries and dealer-supported project routing. [ Contact Yorkville Dealer ](https://www.level5exteriors.com/contact) `; const marker = L.marker([ location.latitude, location.longitude ]) .addTo(map) .bindPopup(popupContent, { autoPan: true, autoPanPadding: [60, 60] }); markerGroup.push(marker); }); if (markerGroup.length) { const group = L.featureGroup(markerGroup); map.fitBounds(group.getBounds(), { padding: [40, 40], maxZoom: 8 }); } else { map.setView([56.1304, -106.3468], 4); } setTimeout(function () { map.invalidateSize(); }, 300); }); ## Why Work With an Authorized Inline Fiberglass Dealer? Inline Fiberglass specializes in fiberglass windows and doors. For customers outside the Toronto / Etobicoke showroom area, authorized dealers help make the product selection and quote process easier by providing a local point of contact. **Important note:** Dealer services may vary by location. Contact the dealer directly to confirm showroom access, sample availability, installation coordination, quote process, and service support. An authorized dealer can help you: - Discuss available Inline Fiberglass window and door products - Review your project location and product needs - Help route quote requests - Coordinate next steps for samples, product details, and project support - Clarify whether your project should be handled by the dealer or by Inline directly Inline’s broader copy strategy emphasizes clear visitor routing, practical CTAs, and avoiding unsupported claims about installation, service areas, certifications, or performance. ## Inline Fiberglass Products Available Through Ontario Dealers Ontario dealers can help you explore Inline Fiberglass product options for residential, commercial, architectural, and high-performance building needs. ![Inline Fiberglass 300 Series tilt-turn fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/300SERIESOPEN_vector-1920w-1024x1024.webp "300+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## Fiberglass Windows Inline Fiberglass manufactures fiberglass window systems designed for long-term performance, comfort, durability, and clean design. Ontario dealers can help route inquiries for casement, awning, fixed, slider, hung, and tilt-and-turn window options. **Relevant Links:** **[Explore Fiberglass Windows](https://inlinefiberglass.com/products/fiberglass-windows/)** **[Compare Window Series](https://inlinefiberglass.com/resources/window-series-comparison-guide/)** **[Request a Quote](https://inlinefiberglass.com/request-a-quote/)** ![Inline Fiberglass 4500 Series black fiberglass double entrance door.](https://inlinefiberglass.com/wp-content/uploads/2026/05/4500-DOUBLE-DOOR-BLACK-1920w-03-1024x1024.webp "4500-DOUBLE-DOOR-BLACK-1920w-03 - Inline Fiberglass - Inline Fiberglass") ## Fiberglass Doors Ontario dealers can help customers explore fiberglass entrance doors and sliding patio door systems for residential and project-based applications. **Relevant Links:** [**Explore Fiberglass Doors**](https://inlinefiberglass.com/products/fiberglass-doors/) [**4500 Series Entrance Doors**](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) [**600 Series Sliding Patio Doors**](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ![Inline Fiberglass 400 Series strip fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/405SERIESB_vector-1920w-1024x1024.webp "405+SERIES+B_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## High-Performance and Passive House For high-performance building projects, Ontario dealers can help start the conversation and route technical questions to the right support path. **Relevant Links:** [**Passive House & High-Performance Products**](https://inlinefiberglass.com/products/passive-house-high-performance/) [**Contact Inline Support**](https://inlinefiberglass.com/contact/) ## What Can an Ontario Inline Dealer Help With? Authorized Inline dealers help local customers move from product interest to the right next step. They are especially useful when a visitor knows they want Inline products but needs local guidance before requesting a quote. ## Product Consultation Dealers can help you understand which Inline Fiberglass windows or doors may fit your project type, design goals, and performance needs. ## Quote Routing Dealers can help collect the basic details needed to start a quote conversation, including project location, product type, timeline, and project scope. ## Sample and Showroom Questions Some dealers may have product samples or showroom access. Availability can vary, so contact the dealer before visiting. ## Installation Coordination Dealer installation support may vary by market. Confirm directly with the Ontario dealer whether they coordinate installation, refer installers, or only support product sales and quote routing. ## Warranty and Service Routing For service or warranty questions, the right path may depend on where the product was purchased. Your dealer can help identify the correct next step, or you can contact Inline for support. ## Find the Right Ontario Dealer for Your Inline Fiberglass Project Whether you are planning a home renovation, custom build, commercial project, or high-performance building, an authorized Ontario Inline Fiberglass dealer can help you take the next step. [ Find an Dealer ](#dealers-map) [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Ontario Inline Fiberglass Dealer Find clear answers to common questions about Inline Fiberglass locations. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Is this an Inline-owned location? No. Ontario dealers listed on this page are authorized Inline Fiberglass dealers, not Inline-owned corporate locations. They are independent businesses that support Inline product inquiries in their local market. Can I buy Inline Fiberglass products through an Ontario dealer? Yes, authorized Ontario dealers can help with Inline Fiberglass product inquiries and quote routing. Contact the dealer closest to your project to confirm the right process. Can I see product samples at an Ontario dealer? Sample availability may vary by dealer. Contact the dealer before visiting to confirm whether samples, displays, or showroom appointments are available. Who handles installation? Installation support may vary by dealer and project type. Some dealers may coordinate installation or work with local installation partners. Others may focus on product consultation and quote routing. Confirm directly with the dealer before assuming installation is included. Who handles warranty or service questions? Start with the dealer that supported your original project. If you are not sure where to go, contact Inline Fiberglass and provide your project details so the request can be routed properly. Can an Ontario dealer quote Passive House or high-performance products? An Ontario dealer can help start the conversation and route your request. For Passive House, PHIUS, NFRC, AAMA, or other certification-related questions, confirm the exact product, configuration, and documentation with Inline Fiberglass. Avoid assuming every product or configuration carries the same certification. I am an architect or builder. Should I contact the dealer or Inline directly? For local project support, you can contact the dealer. For technical documents, certification details, drawings, or complex project requirements, you may also contact Inline Fiberglass directly for product support. What if there is no dealer in my city? Contact Inline Fiberglass. The team can help determine whether your area is supported by a nearby Ontario dealer or by another inquiry path. --- ### [Window Grilles and SDL Bars](https://inlinefiberglass.com/products/fiberglass-windows/options/window-grilles-and-sdl-bars/) **Published:** August 4, 2026 **Author:** anthony@webhaven.ca **Content:** # Window Grilles and SDL Bars Grilles can change the entire character of a window. They can make a new window feel more traditional, more architectural, or more consistent with an existing home. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ Explore the Profiles ](#profile-options) ## Give Your Windows the Right Architectural Character Window grilles and SDL bars can transform the appearance of a window. Use them to add traditional divided-lite character, complement contemporary architecture or coordinate new windows with the established design of a home or building. Explore Inline Fiberglass SDL profiles, flat bars, brickmolds and frame extender options. Our team can help you compare the available designs and confirm which profiles are compatible with your selected window series. [ Explore the Profiles ](#profile-options) [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## Choose the Detail That Fits Your Design The right window detail should support the architecture rather than compete with it. Inline offers several ways to customize the appearance of the glass and the transition between the window and the surrounding wall. ## Window Grilles Window grilles add a visible pattern across the glass. Depending on the profile and layout, they can help a new window complement traditional, transitional or contemporary architecture. Inline can supply grille options, although exact styles and availability should be confirmed for the selected window series. [ What is the Difference ](#the-difference) ## SDL Bars SDL stands for simulated divided lite. SDL bars are non-removable profiles applied to the glass to create the appearance of separate panes while retaining a continuous insulated glass unit. They provide greater surface depth and visual definition than a grille pattern, making SDL bars well suited to projects where divided-lite character is an important architectural feature. [ Explore SDL Profiles ](#sdl-profiles) ## Flat Bars Flat bars offer a straighter, cleaner interpretation of the divided-lite look. Their simple geometric profiles work particularly well with modern homes, contemporary renovations and commercial designs. [ Explore Flat Bar Profiles ](#flat-bar-profiles) ## Brickmolds and Frame Extenders Grilles and SDL bars shape the appearance of the glass. Brickmolds and extenders help finish the perimeter of the window and coordinate it with the building’s exterior wall, siding or trim condition. [ Explore Sizing Options ](#brick-molds-extenders) ## What Is the Difference Between Grilles and SDL Bars? “Window grille” is a broad term for a decorative pattern that visually divides the glass. An SDL system is a more specific option in which dimensional bars are applied to the surface of the glass. SDL bars create stronger shadow lines and a more substantial divided-lite appearance. For projects that need traditional character, architectural depth or a closer visual connection to individually glazed panes, SDL bars may be the preferred choice. For a simpler or more contemporary result, a flat bar or lighter grille treatment may be more appropriate. **The final choice should consider:** - The architectural style of the building - The size and proportions of the window - The desired amount of visual definition - Interior and exterior frame colours - The selected Inline window series - Whether the profile is required on the interior, exterior or both ## Inline Fiberglass SDL Options Inline’s available SDL collection includes five aluminum profile designs. Compatibility varies by window series and by interior or exterior application. ![Long gray aluminum edge trim extrusion with rounded top, shown at an angle.](https://inlinefiberglass.com/wp-content/uploads/2026/08/1004-alum.png "1004-alum - Inline Fiberglass - Inline Fiberglass") ## 1004 Aluminum A broad, rounded profile that creates strong depth and traditional architectural character. Consider the 1004 profile for heritage-inspired homes, classic façades and custom residential designs that call for a more divided-lite appearance. ![Long gray metal rail extrusion shown at a slight angle on a light background, conveying a linear component for machinery or framing.](https://inlinefiberglass.com/wp-content/uploads/2026/08/1005-alum.png "1005-alum - Inline Fiberglass - Inline Fiberglass") ## 1005 Aluminum A slimmer rounded profile that adds traditional detail without visually dominating the window. Its narrower proportions work well for transitional homes, colonial-inspired designs and projects that need a more refined divided-lite treatment. ![Long gray aluminum extrusion/rail with a hollow U-shaped cross-section, shown diagonally on a light background.](https://inlinefiberglass.com/wp-content/uploads/2026/08/1006-alum.png "1006-alum - Inline Fiberglass - Inline Fiberglass") ## 1006 Aluminum A straight, angular profile with clean lines and a crisp geometric appearance. The 1006 profile is a strong choice for contemporary homes, minimalist architecture and commercial applications where the grille pattern should feel precise and modern. ![Long silver metal rail extrusion shown at an angle on a white background.](https://inlinefiberglass.com/wp-content/uploads/2026/08/1008-alum.png "1008-alum - Inline Fiberglass - Inline Fiberglass") ## 1008 Aluminum A wider contoured profile that adds noticeable depth and definition across larger panes of glass. Its substantial appearance can help balance oversized windows and custom window assemblies without relying on an overly ornate profile. ![Long silver metal rail with a rounded edge, oriented diagonally across a light background.](https://inlinefiberglass.com/wp-content/uploads/2026/08/1009-alum.png "1009-alum - Inline Fiberglass - Inline Fiberglass") ## 1009 Aluminum A lower-profile contoured design that provides subtle definition and softer architectural detailing. The 1009 profile can complement both transitional and contemporary projects where the divided-lite effect should remain understated. [ View the SDL Compatibility Chart ](https://inlinefiberglass.com/wp-content/uploads/2026/08/SDL-Inline-Window-Uses.png) ## Inline Fiberglass Flat Bar Options Flat bars offer clean, uninterrupted lines for modern window grille patterns. Four widths are available, allowing the visual weight of the bars to be matched to the scale of the window and the architecture. ![Long gray rectangular plank/beam laid diagonally across a pale gradient background.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Flat-Bar-1.png "Flat-Bar-1 - Inline Fiberglass - Inline Fiberglass") ## 1" Flat Bar The narrowest available flat bar creates a clean, understated pattern. It is well suited to projects that want subtle definition while preserving open views and a lighter appearance across the glass. ![Long gray rectangular block oriented diagonally across a light background (3D rendering).](https://inlinefiberglass.com/wp-content/uploads/2026/08/Flat-Bar-125.png "Flat-Bar-1.25 - Inline Fiberglass - Inline Fiberglass") ## 1.25" Flat Bar The 1¼-inch option provides a balanced level of visual definition. It is wide enough to make the grille pattern noticeable while maintaining the streamlined appearance associated with modern flat bars. ![Long gray rectangular plank viewed diagonally against a pale background, seen in perspective from lower left to upper right.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Flat-Bar-15.png "Flat-Bar-1.5 - Inline Fiberglass - Inline Fiberglass") ## 1.5" Flat Bar The 1½-inch flat bar creates a bolder pattern with greater presence across the window. Consider this width for larger windows, more prominent elevations or projects where the grille layout is intended to be a visible design feature. ![Long gray rectangular plank seen in perspective, extending diagonally from bottom-left to top-right.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Flat-Bar-2.png "Flat-Bar-2 - Inline Fiberglass - Inline Fiberglass") ## 2" Flat Bar The widest flat bar produces the strongest geometric statement. Its greater visual weight can complement large window assemblies and contemporary designs that call for substantial, sharply defined lines. [ View the Flat Bar Compatibility Chart ](https://inlinefiberglass.com/wp-content/uploads/2026/08/Flat-Bar-Inline-Window-Uses.png) ## Inline Fiberglass Brickmolds, Nailing Fins and Frame Extenders Brickmolds and frame extenders provide additional options for coordinating the window perimeter with the building’s exterior construction and trim. These components should be selected with the window series, wall depth, cladding condition and installation approach in mind. ![3D rendering of a rectangular hollow steel channel with a downward mounting flange](https://inlinefiberglass.com/wp-content/uploads/2026/08/BM-110.png "BM-110 - Inline Fiberglass - Inline Fiberglass") ## 110 Brickmold ![Gray aluminum extrusion forming a long channel with an angled, hinged-looking cover — a rail/track profile used in mounting or sliding hardware](https://inlinefiberglass.com/wp-content/uploads/2026/08/BM-112.png "BM-112 - Inline Fiberglass - Inline Fiberglass") ## 112 Brickmold ![Rectangular gray aluminum extrusion with a hollow center, shown at an angle with open interior.](https://inlinefiberglass.com/wp-content/uploads/2026/08/BM-128.png "BM 128 - Inline Fiberglass - Inline Fiberglass") ## 128 Brickmold ![Long gray rectangular hollow metal extrusion with ridged sides, shown at an angle.](https://inlinefiberglass.com/wp-content/uploads/2026/08/BM-128A.png "BM-128A - Inline Fiberglass - Inline Fiberglass") ## 128A Brickmold ![Isometric view of a gray rectangular aluminum extrusion with a hollow square cross-section and a removable top cover sticking out at one end.](https://inlinefiberglass.com/wp-content/uploads/2026/08/BM-140.png "BM-140 - Inline Fiberglass - Inline Fiberglass") ## 140 Brickmold ![Long black aluminum extrusion with a U-shaped cross-section, shown diagonally as a product image.](https://inlinefiberglass.com/wp-content/uploads/2026/08/EX-115-1250.PNG "EX-115-1250 - Inline Fiberglass - Inline Fiberglass") ## 1.25" Extender ![Black aluminum extrusion rail with a U-shaped hollow channel and top flange, shown at an angle against a light background (industrial mounting track).](https://inlinefiberglass.com/wp-content/uploads/2026/08/EX-115-1620.PNG "EX-115-1620 - Inline Fiberglass - Inline Fiberglass") ## 1.62" Extender ![Dark gray aluminum extrusion with a U-shaped channel and flat top surface, used as a track or trim piece.](https://inlinefiberglass.com/wp-content/uploads/2026/08/EX-115-2250.png "EX-115-2250 - Inline Fiberglass - Inline Fiberglass") ## 2.25" Extender ![Black metal rail extrusion with hollow U-shaped cross-section, angled view, likely a sliding track component](https://inlinefiberglass.com/wp-content/uploads/2026/08/EX-115-325.PNG "EX-115-325 - Inline Fiberglass - Inline Fiberglass") ## 3.25" Extender ![Cross-sectional view of a gray aluminum extrusion rail with a flat cover plate, showing hollow channels inside.](https://inlinefiberglass.com/wp-content/uploads/2026/08/EX-115-4250.PNG "EX-115-4250 - Inline Fiberglass - Inline Fiberglass") ## 4.25" Extender ## Nailing Fin [ Discuss Brickmolds and Extenders ](https://inlinefiberglass.com/contact/) ## Confirm Compatibility Before Finalizing Your Selection Not every SDL or flat bar profile is available on every Inline window series. Compatibility can also differ between interior and exterior applications. Before selecting a profile, Inline will help confirm: - The window series and operating style - Interior and exterior profile availability - Bar width and proportions - Finish and colour availability - Window size and configuration - The proposed grille layout - Related brickmold or extender requirements This review helps ensure the selected details work together as part of the complete window system. [ Ask About Profile Compatibility ](tel:1-866-566-5656) ## A Simple Selection Process ## 1. Share Your Design Direction Send Inline your plans, elevations, window schedule, inspiration images or photographs of the existing building. ## 2. Select the Window Series Grille, SDL and trim availability depends on the underlying window product and configuration. ## 3. Compare Profiles and Widths Review the SDL contours and flat bar widths against the scale and style of the project. ## 4. Confirm Compatibility and Finishes Inline will help confirm which profiles, colours, brickmolds and extenders are available for the selected products. ## 5. Include the Options in Your Quote Once the details are confirmed, the selected options can be included in the project quotation. [ Start Your Project Today ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Window Grilles and SDL Bars Find clear answers to common questions about fiberglass Window Grilles and SDL Bars [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What does SDL mean? SDL means simulated divided lite. SDL bars are applied to the glass to recreate the appearance of a window made from multiple smaller panes while using a continuous insulated glass unit. Are SDL bars the same as window grilles? SDL bars are one type of window grille treatment. The term “grille” can refer broadly to decorative patterns across the glass, while SDL bars are dimensional profiles applied to the glass surface. Does Inline offer standard grilles as well as SDL bars? Yes. Inline can supply grille options, although SDL profiles are often selected when a project calls for greater depth and a more architectural divided-lite appearance. Available options should be confirmed by product series. Which flat bar widths are available? Inline’s flat bar options include 1 inch, 1¼ inches, 1½ inches and 2 inches. Are all SDL profiles available on every Inline window? No. Availability varies by window series, configuration and interior or exterior application. Review the compatibility chart or contact Inline before finalizing the design. Can SDL bars be colour-matched to the window? Finish options vary by profile and product series. Inline can review the requested window colour and confirm the compatible SDL or flat bar finishes during the quoting process. What brickmold profiles does Inline offer? The current brickmold profile list includes 110, 112, 128, 128A and 140. Compatibility and installation details should be confirmed for the specific project. What frame extender sizes are available? Current extender options include 1¼, 1⅝, 2¼, 3¼ and 4½ inches. Can I see these options before ordering? Book a showroom visit or speak with an Inline product specialist to review the available renderings, samples and compatibility information before finalizing your quote. ## Design the Details Before Manufacturing Begins Tell Inline about your project and the window series you are considering. Include plans, elevations, existing-home photos or design references when available. Our team will help you review profile compatibility, finish options, brickmolds and extenders before the details are added to your quote. [ Book a Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Service Parts Requests](https://inlinefiberglass.com/services/service-parts-requests/) **Published:** June 18, 2026 **Author:** anthony@webhaven.ca **Content:** # Service & Parts Requests for Inline Fiberglass Products Need help with an Inline Fiberglass window or door? Use this page to submit a service request, ask about replacement parts, or provide details for a possible warranty review. [ Submit a Service Request ](#form) [ Review Warranty Information ](https://inlinefiberglass.com/resources/warranty/) ## Help Us Send Your Request to the Right Team Service requests are different from new quote requests. This form is for current Inline Fiberglass customers, dealers, builders, property managers, and project teams who need help with an existing product. Use this page for: - Window or door service questions - Parts requests - Glass replacement questions - Hardware or adjustment concerns - Fiberglass frame or sash concerns - Possible warranty-related issues - Dealer, builder, or commercial project service coordination [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Submit a Service Request ](#form) ## What to Include With Your Service Request A complete service request helps Inline Fiberglass understand the product, project, and issue before responding. Do not worry if you do not have every detail. Submit what you have, and our team will review the request. - Your name, email, phone number, and project address or city - Original order number, work order, invoice, dealer name, or builder name, if available - Product type: window, entrance door, sliding patio door - Approximate installation date, if known - Clear description of the issue - Photos of the full product / close-up photos of the issue - Photos of hardware, glass, damaged areas, and any available order or project information - Whether the product was purchased through Inline, a dealer, builder, contractor, or retailer ## What Type of Service Do You Need? Select the service category that best matches your issue so Inline can review your request and help determine the appropriate next step. ## Parts Requests Use this option if you need help identifying, requesting, or purchasing a part for an Inline Fiberglass window or door. Homeowners can request parts directly through Inline. **Examples may include:** Handles, Locks, Cranks or operators, Hinges, Weatherstripping, Screens, Sliding door hardware, Other product components. **Helpful detail to include:** photos of the part, the full window or door, and any product/order information. If the part can be identified, Inline can advise on the next step for requesting or purchasing it. ## Window Adjustments or Operation Issues Use this option if a window is difficult to open, close, lock, tilt, or slide. **Examples may include:** Casement or awning operation issues, Tilt and turn adjustment questions, Slider movement concerns, Single hung or double hung operation issues, Lock alignment concerns, Air or water-related concerns requiring review. **Helpful detail to include:** product type, issue location, when the issue started, and clear photos of the full product and the specific issue. ## Door Service Requests Use this option for entrance door or sliding patio door concerns. **Examples may include:** Door alignment, Locking or latching issues, Sliding operation concerns, Handle or hardware questions, Weatherstripping or sealing concerns, Glass or panel-related questions. **Helpful detail to include:** whether the issue is with an entrance door, sliding patio door, frame, glass, hardware, or threshold. ## Glass Replacement Questions Use this option if you need help with glass-related concerns. **Examples may include:** Cracked or broken glass, Seal failure concerns, Condensation between panes, Glass replacement questions, Glass unit identification. **Important note:** Glass issues may require photos, original order details, and review before the next step can be confirmed. ## Fiberglass Frame or Finish Concerns Use this option if you need support with a fiberglass frame, sash, colour, coating, or visible surface concern. **Examples may include:** Frame damage, Finish questions, Scratches or surface concerns, Colour or coating concerns, Impact-related damage. **Helpful detail to include:** close-up photos, wider photos showing the full unit, and details about when the concern was first noticed. ## Commercial or Multi-Unit Service Requests For commercial, multi-unit, builder, or property-managed projects, please include the project name, unit number if applicable, original project contact, and a complete list of affected products. Commercial requests may require coordination between Inline, the dealer, builder, contractor, property manager, or original project team. ## What Happens After You Submit A Clear Path From Inquiry to Resolution ## 1. Submit your service details Send your contact information, product details, photos, and a clear description of the issue. ## 2. Inline reviews your request The team will review the information and follow up within 48 hours. If more details are needed, Inline may contact you before confirming the next step. ## 3. You receive the next step Depending on the issue, the next step may involve product identification, parts review, warranty review, dealer coordination, or additional documentation. Submitting a request does not automatically confirm warranty coverage, replacement approval, or service responsibility. It starts the review process. ## Urgent Issue? Inline Fiberglass does not provide emergency service. If your issue involves immediate safety, security, active water entry, broken glass, or a window or door that cannot close, contact an appropriate local professional first. You can still submit a service request through the contact form so Inline can review the product issue and follow up within the standard service request process. [ Submit a Service Request ](#form) ## Common Questions About Service & Parts Requests Find clear answers to common questions about Service & Parts Requests. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) How do I submit an Inline Fiberglass service request? Use the service request form on this page. Include your contact information, product type, original order details if available, a description of the issue, and clear photos. What information do I need for a parts request? Photos are the most helpful starting point. Please include photos of the part, the full window or door, and any order information or project details you have. Do I need my original work order or invoice? It is strongly recommended. Your original work order, invoice, dealer name, builder name, or project information can help Inline identify the product and route the request properly. Can I submit a request without an order number? Yes. Submit as much information as you have. Photos, project location, installation date, dealer or builder name, and product type can still help the team review your request. Are photos required? Photos should be included whenever possible. Wider photos show the full product, while close-up photos help the team understand the specific concern. Who handles service if I bought through a dealer, builder, or contractor? Submit your request with the original dealer, builder, contractor, retailer, or project team details if you have them. Inline will review the request and route it according to the existing service process. Can I request glass replacement? Yes. Use the form to submit a glass replacement question. Include photos of the full unit, the glass issue, and any order or product information available. Can commercial or multi-unit projects use this form? Yes. Commercial, builder, property-managed, and multi-unit requests should include the project name, unit number if applicable, original project contact, and a list of affected products. What should I do if the issue is urgent? Inline Fiberglass does not provide emergency service. If the issue affects immediate safety, security, broken glass, water entry, or a window or door that cannot close, contact an appropriate local professional first. Then submit a service request with photos so Inline can review the product concern. ## Submit a Service or Parts Request Please provide as much detail as possible and upload photos with your request. Complete requests help the team review the issue with fewer delays. Service and parts Newsletter First Name Last Name Phone/Mobile Email I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther Request Type: - Select -ServiceWarrantyPartsMaintenanceOther Product Type: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Product Name and Series Order / Invoice Number Dealer or Installer Name Address Address Line 1 Address Line 2 City State Zip Code Country Select CountryAfghanistanAland IslandsAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBonaire, Saint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBritish Virgin IslandsBruneiBulgariaBurkina FasoBurundiCabo VerdeCambodiaCameroonCanadaCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos (Keeling) IslandsColombiaComorosCook IslandsCosta RicaCroatiaCubaCuraçaoCyprusCzech RepublicDemocratic Republic of the Congo (Kinshasa)DenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEswatiniEthiopiaFalkland IslandsFaroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuamGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and McDonald IslandsHondurasHong KongHungaryIcelandIndiaIndonesiaIranIraqIrelandIsle of ManIsraelItalyIvory CoastJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKosovoKuwaitKyrgyzstanLaosLatviaLebanonLesothoLiberiaLibyaLiechtensteinLithuaniaLuxembourgMacao S.A.R., ChinaMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMartiniqueMauritaniaMauritiusMayotteMexicoMicronesiaMoldovaMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNetherlandsNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorth KoreaNorth MacedoniaNorthern Mariana IslandsNorwayOmanPakistanPalauPalestinian TerritoryPanamaPapua New GuineaParaguayPeruPhilippinesPitcairnPolandPortugalPuerto RicoQatarRepublic of the Congo (Brazzaville)RomaniaRussiaRwandaRéunionSaint BarthélemySaint HelenaSaint Kitts and NevisSaint LuciaSaint Martin (Dutch part)Saint Martin (French part)Saint Pierre and MiquelonSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia/Sandwich IslandsSouth KoreaSouth SudanSpainSri LankaSudanSurinameSvalbard and Jan MayenSwedenSwitzerlandSyriaTaiwanTajikistanTanzaniaThailandTimor-LesteTogoTokelauTongaTrinidad and TobagoTunisiaTurkmenistanTurks and Caicos IslandsTuvaluTürkiyeUgandaUkraineUnited Arab EmiratesUnited Kingdom (UK)United States (US)United States (US) Minor Outlying IslandsUnited States (US) Virgin IslandsUruguayUzbekistanVanuatuVaticanVenezuelaVietnamWallis and FutunaWestern SaharaYemenZambiaZimbabwe Image Upload Choose File Issue description I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Sales Inquiry](https://inlinefiberglass.com/contact/sales-inquiry/) **Published:** June 16, 2026 **Author:** anthony@webhaven.ca **Content:** # Sales Inquiry Have a question about fiberglass windows, fiberglass doors, a quote, service, technical documents, or dealer opportunities? Use this page to reach the right department faster. [ Submit a Sales Inquiry ](#form) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Start the conversation about your window or door project. Planning a residential, commercial, builder, or architectural project? Submit a sales inquiry and the Inline Fiberglass team will help you take the next step toward the right fiberglass windows or doors for your needs. Whether you are looking for a fiberglass windows quote, a fiberglass doors quote, product guidance, showroom information, or commercial project support, this form helps route your inquiry to the right team. [ Submit a Sales Inquiry ](#form) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) **Quick note before you submit:** For warranty, parts, repair, or after-sales support, use the [Service Request](https://www.inlinefiberglass.com/contact/service-request/) form so your issue can be routed correctly. ## Talk to a Manufacturer Focused on Fiberglass wWndows and Doors. Inline Fiberglass is built around one core material: fiberglass. That focus supports stronger product knowledge, better project guidance, and window and door systems designed for long-term performance, comfort, durability, and clean design. ## Why buyers contact Inline ## Fiberglass-only focus Inline specializes in fiberglass windows and doors instead of treating fiberglass as one product line among many. ## Residential and commercial support Inline supports homeowners, builders, architects, developers, commercial buyers, and dealer-supported projects. ## Product guidance before quoting Not sure which window or door system fits your project? Submit your project details and the team can help point you in the right direction. ## Showroom and phone support Visitors can also contact Inline by phone or explore showroom options when they want to see products before moving forward. ## Technical credibility Architects, builders, and commercial buyers can request product details, technical documents, and project support for performance-focused work. [ Submit a Sales Inquiry ](#form) ## Submit Your Sales Inquiry Tell us about your window or door project. The more detail you provide, the easier it is for the Inline Fiberglass team to route your inquiry and help you take the right next step. Product inquiry sales form Newsletter First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. ## What Happens After You Submit a Sales Inquiry? ## 1. Your request is reviewed Inline will review your contact details, project type, product interest, location, and timeline. ## 2. Your inquiry is routed Your submission will be directed based on whether you are a homeowner, builder, architect, commercial buyer, dealer, or another type of contact. ## 3. The team follows up A representative will contact you to clarify next steps, request missing information, or guide you toward the right quote, showroom, dealer, or technical support path. ## 4. You receive the right next step Depending on your project, the next step may be a quote conversation, product recommendation, showroom visit, technical document request, dealer referral, or commercial project discussion. [ Submit a Sales Inquiry ](#form) ## What Products Are You Interested In? ## Fiberglass Windows Inline offers fiberglass window systems for residential, commercial, and high-performance applications, including casement, awning, fixed, tilt and turn, horizontal slider, single hung, and double hung styles. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Fiberglass Entrance Doors Inline’s fiberglass entrance doors are designed for durability, thermal comfort, design flexibility, and curb appeal across residential and architectural applications. [ Explore Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ## Sliding Patio Doors Inline’s fiberglass sliding patio doors support larger openings, natural light, smooth operation, and performance-focused project needs. [ Explore Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## Passive House and High-Performance For high-performance projects, contact Inline to confirm the right product, documentation, and technical support for your project. [ Request Technical Support ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Common Questions About Sales Inquiries Find clear answers to common questions about Inline Fiberglass sales inquiries. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What is this sales inquiry form for? This form is for new project inquiries related to Inline Fiberglass windows, entrance doors, sliding patio doors, high-performance products, commercial projects, and product guidance. Is this the same as requesting a quote? Not exactly. A sales inquiry starts the buying conversation. If you already have enough project details and want pricing, use the Request a Quote path or include quote-ready details in this form. What information should I include for a fiberglass windows quote? Include your project location, number of windows, window types if known, rough sizes or drawings, photos if available, and your project timeline. What information should I include for a fiberglass doors quote? Include whether you need an entrance door or sliding patio door, approximate size, project location, photos or drawings if available, colour or glass preferences, and timeline. Can homeowners use this form? Yes. Homeowners can use this form to ask about fiberglass windows, fiberglass doors, showroom visits, product options, or quote next steps. Can architects and builders use this form? Yes. Architects, builders, contractors, and developers can use this form for project inquiries. For technical documents, drawings, or product data, the Architect / Specifier Package Request form may be the better path. Do I need exact measurements before contacting Inline? Exact measurements help, but they are not always required for the first conversation. Share what you have, such as photos, drawings, rough sizes, or a basic project description. Can I visit a showroom before requesting a quote? Yes. If you want to see products, finishes, and options before moving forward, include that in your inquiry or use the Book a Showroom Visit page. Is this form for service or warranty issues? No. For warranty, parts, repair, or after-sales support, use the Service Request form. That helps route your request correctly and prevents delays. --- ### [Blog](https://inlinefiberglass.com/resources/blog/) **Published:** August 18, 2026 **Author:** anthony@webhaven.ca **Content:** # Practical Window and Door Advice, Built Around Fiberglass The Inline Fiberglass blog is built to help homeowners, architects, builders, developers, and dealers make better window and door decisions without sorting through generic advice. [ Read Featured Articles ](#articles) [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## Inline Fiberglass Featured Resource Articles Whether you are comparing materials, planning a replacement project, researching high-performance products, or preparing to request a quote, start here. ## Black Fiberglass Windows: Design, Heat and Finish Considerations Considering black fiberglass windows? Compare design, heat exposure and finish considerations before choosing a dark frame for your project. [ Read Article ](https://inlinefiberglass.com/black-fiberglass-windows-design-heat-and-finish-considerations/) ## SDL vs Grilles Between Glass: Choosing the Right Window Detail Compare SDL vs grilles between glass for appearance, cleaning and design. See which divided-lite window detail may be right for your project. [ Read Article ](https://inlinefiberglass.com/sdl-vs-grilles-between-glass-choosing-the-right-window-detail/) ## How to Specify Fiberglass Windows and Doors A practical guide for architects and specifiers covering fiberglass window and door selection, performance, glazing, finishes, certifications, technical documents and project coordination. [ Read Article ](https://inlinefiberglass.com/how-to-specify-fiberglass-windows-and-doors/) ## Custom Colours and Split Finishes for Fiberglass Windows This guide explains how custom colours and split finishes can be used, what design decisions to consider, and what to confirm before finalizing your Inline Fiberglass window selection. [ Read Article ](https://inlinefiberglass.com/custom-colours-and-split-finishes-for-fiberglass-windows/) ## Written for Real Window and Door Decisions Inline Fiberglass content is reviewed with product knowledge, technical documentation, and practical project guidance in mind. For product-specific details, certification scope, drawings, or technical data, contact the Inline team directly. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Get Practical Window and Door Planning Tips Researching fiberglass windows or doors? Join the Inline Fiberglass email list for helpful buying guides, product updates, comparison articles, and project planning resources. No spam. Just practical information to help you make a better window or door decision. Subscription Form (#14) Contact Subscribe We respect your privacy and will only use your details to send relevant Inline Fiberglass resources and respond to your requests. ## Common Questions About Inline Fiberglass Resource Articles Find clear answers to common questions about fiberglass windows and doors resources blog articles and product information. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where should I start if I am researching fiberglass windows? Start with the material comparison guides and buying guides. If you are replacing windows in your home, read the window replacement tips first. If you are planning a new build, commercial project, or Passive House project, start with the performance and technical planning articles. Which blog articles are best for homeowners? Homeowners should begin with articles about window replacement tips, fiberglass vs vinyl windows, energy-efficient window tips, window styles, glass options, colours, and how to request a quote. Which guides are best for architects and specifiers? Architects and specifiers should look for articles about Passive House window advice, technical documentation, product series selection, performance data, CAD drawings, and certification-related planning. For project-specific details, use the spec package request path. Can I use these articles to choose a product? Yes. The blog is designed to help you understand your options, but it should not replace project-specific advice. Window and door selection depends on the product type, project location, performance needs, design goals, and technical requirements. Are all Inline products covered in the blog? The blog should cover major product categories, including fiberglass windows, fiberglass entrance doors, sliding patio doors, Passive House and high-performance products, options, service topics, and project planning. Product-specific claims should be confirmed through approved product documentation. Do blog articles include technical data? Some articles may summarize technical topics in plain English. For drawings, product specs, certification documents, or project-specific data, use the Technical Downloads page or request a spec package. ## Ready to Move From Research to the Right Next Step? Use the blog to learn, compare, and plan. When you are ready, Inline Fiberglass can help you take the next step based on your project type. ## For Homeowners Planning a window or door replacement? Tell us about your project and we will help you understand your options. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## For Architects and Specifiers Need product specs, drawings, or performance documentation? Request the technical package for your project. [ Request Spec Package ](https://inlinefiberglass.com/architect-specifier-package-request/) ## For Builders and Commercial Teams Working on a residential, commercial, or high-performance project? Connect with Inline for product guidance and project support. [ Request Project Support ](https://inlinefiberglass.com/request-a-quote/) ## For Readers Still Comparing Options Read our Resources articles and keep researching before you contact the team. [ View Our Resources ](https://inlinefiberglass.com/resources/) --- ### [Thomas Hong](https://inlinefiberglass.com/resources/blog/thomas-hong/) **Published:** August 20, 2026 **Author:** anthony@webhaven.ca **Content:** # Thomas Hong Retail Sales Manager and Blog Author at Inline Fiberglass Thomas Hong is a sales and management professional in the window and door industry with more than 10 years of experience across installation, service, customer support, and sales. As one of Inline Fiberglass’ blog contributors, Thomas shares practical guidance to help homeowners, builders, and project teams better understand fiberglass windows, fiberglass doors, product selection, replacement planning, and long-term performance considerations. [ Request a Quote ](#form) [ Explore Products ](#details) ![Portrait of a man in a blue button-down shirt with a company logo on the chest, seated with arms resting on a table.](https://inlinefiberglass.com/wp-content/uploads/2026/08/Author-Thomas-Hong-683x1024.jpg "Author-Thomas-Hong - Inline Fiberglass - Inline Fiberglass") [ Request a Quote ](#form) [ Explore Products ](#details) ## About Thomas Hong ## About Thomas Hong [ Contact Thomas ](mailto:thong@inlinefiberglass.com) Thomas Hong brings hands-on window and door experience to his role at Inline Fiberglass. Before moving into sales leadership, Thomas worked directly in service and installation-related roles, giving him a practical understanding of how window and door products perform before, during, and after installation. Today, Thomas serves as Retail Sales Manager at Inline Fiberglass, where he helps customers and sales consultants understand product options, project requirements, and the value of choosing fiberglass windows and doors for long-term performance. His approach to customer service is built around education. Rather than simply pointing customers toward a product, Thomas focuses on helping them understand their options, ask better questions, and choose window and door solutions that fit their needs, goals, and budget. [ Contact Thomas ](mailto:thong@inlinefiberglass.com) ## Window and Door Experience Built from the Ground Up Thomas has held several roles at Inline Fiberglass, giving him a broad view of the customer journey and product lifecycle. His experience includes: #### Service and Product Support Thomas began in service, where he gained firsthand insight into product performance, customer questions, and the importance of clear communication after a product is installed. #### Sales Consultation As a Sales Consultant, Thomas worked directly with customers to understand project needs, explain product options, and help them move through the quote and selection process. #### Sales Management In his current leadership role, Thomas trains and supports a team of professional sales consultants, using his background in service, installation, and sales to improve the customer experience. #### Customer Education Thomas is passionate about sharing product knowledge and industry trends so customers can make more confident decisions about fiberglass windows, entrance doors, sliding patio doors, and high-performance building products. ## Helping Customers Understand Fiberglass Windows and Doors Thomas has held several roles at Inline Fiberglass, giving him a broad view of the customer journey and product lifecycle. His experience includes: Inline Fiberglass specializes in fiberglass windows and doors for residential, commercial, architectural, and dealer-supported projects. The broader website strategy positions Inline around fiberglass-only focus, manufacturing control, product performance, and practical customer guidance. Thomas’ role supports that same goal. His writing helps translate product and industry knowledge into clear, useful information for people comparing window materials, planning a replacement project, reviewing door options, or trying to understand what makes fiberglass different from vinyl, aluminum, or wood. His articles are written to help readers answer questions such as: - What makes fiberglass windows different? - Which window style is right for my project? - What should I know before requesting a quote? - Are fiberglass windows a good fit for energy-efficient homes? - How to compare performance, design, and budget? - What should architects, builders, or contractors know before specifying Inline products? ## Topics Thomas Writes About Thomas’ blog content focuses on practical window and door education, including: #### Fiberglass Window Selection Guidance on fiberglass casement windows, awning windows, fixed windows, tilt and turn windows, sliding windows, single hung windows, double hung windows, and other Inline product categories. #### Fiberglass Door Options Educational content about fiberglass entrance doors, sliding patio doors, customization options, thermal performance, and product fit. #### Window and Door Replacement Planning Advice for homeowners comparing materials, understanding project steps, preparing for quote requests, and choosing products that support comfort, durability, and design goals. #### Product Performance and Customer Questions Plain-English explanations of common topics such as energy efficiency, long-term durability, glass options, hardware, finishes, maintenance, and product selection. #### Industry Trends and Practical Buying Guidance Insights from Thomas’ customer-facing experience, including what buyers should consider before choosing products for residential or commercial projects. ## Articles by Thomas Hong Read Thomas Hong’s latest articles on fiberglass windows, fiberglass doors, product selection, replacement planning, and practical window and door buying advice. ## Black Fiberglass Windows: Design, Heat and Finish Considerations Considering black fiberglass windows? Compare design, heat exposure and finish considerations before choosing a dark frame for your project. [ Read Article ](https://inlinefiberglass.com/black-fiberglass-windows-design-heat-and-finish-considerations/) ## SDL vs Grilles Between Glass: Choosing the Right Window Detail Compare SDL vs grilles between glass for appearance, cleaning and design. See which divided-lite window detail may be right for your project. [ Read Article ](https://inlinefiberglass.com/sdl-vs-grilles-between-glass-choosing-the-right-window-detail/) ## How to Specify Fiberglass Windows and Doors A practical guide for architects and specifiers covering fiberglass window and door selection, performance, glazing, finishes, certifications, technical documents and project coordination. [ Read Article ](https://inlinefiberglass.com/how-to-specify-fiberglass-windows-and-doors/) ## Custom Colours and Split Finishes for Fiberglass Windows This guide explains how custom colours and split finishes can be used, what design decisions to consider, and what to confirm before finalizing your Inline Fiberglass window selection. [ Read Article ](https://inlinefiberglass.com/custom-colours-and-split-finishes-for-fiberglass-windows/) ## Have Questions About Fiberglass Windows or Doors? Choosing the right window or door product starts with the right information. If you are planning a residential, commercial, or high-performance project, Inline Fiberglass can help you review your options and take the next step. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Ontario Association of Architects](https://inlinefiberglass.com/projects/commercial/ontario-association-of-architects/) **Published:** June 12, 2026 **Author:** anthony@webhaven.ca **Content:** # Ontario Association of Architects Retrofit Case Study Fiberglass-frame, triple-glazed windows for a high-performance commercial retrofit in Toronto. [ Start Your Project ](#form) [ View Case Study ](#details) ## Fiberglass-frame, triple-glazed windows for a high-performance commercial retrofit in Toronto. The Ontario Association of Architects Headquarters is a recognized Toronto building known as “Wings Over Don Mills.” When the building required a major retrofit, the project team needed window systems that could support a stronger building envelope, improved energy performance, and the long-term goals of a sustainability-focused institutional project. Inline Fiberglass supplied fiberglass-frame, triple-glazed windows as part of the envelope upgrade, helping the project team improve thermal performance while maintaining the clean architectural character of the building. [ Start Your Project ](#form) [ Project Snapshot ](#project-snapshot) ## A Retrofit Built Around Performance The OAA Headquarters retrofit was more than a cosmetic update. The project was planned to refresh the interior, improve energy performance, and support the building’s alignment with the 2030 Challenge, a building-sector goal focused on reducing greenhouse gas emissions in major renovations and new construction. The envelope upgrade included added insulation, curtainwall retrofits, and new Inline Fiberglass window systems. For a project like this, the windows were not just a finish selection. They were part of the building performance strategy. [ The Challenge ](#the-challange) ## Project Snapshot **Project:** Ontario Association of Architects Retrofit **Location:** 111 Moatfield Drive, Toronto, ON **Building Type:** Institutional / Commercial Retrofit **Project Type:** Deep Energy Retrofit **Window Type:** Fiberglass-frame, triple-glazed **Architect:** David Fujiwara **Contractor:** MJ Dixon Construction Ltd. ## The Challenge: Upgrade a Recognized Building Without Compromising Performance The OAA Headquarters was originally built in 1992. Over time, the building required a significant retrofit to improve comfort, update the interior, and reduce operating energy use. For the project team, the window package had to support several priorities at once: - Improve the performance of the building envelope. - Help reduce heat loss through the window openings. - Support triple-glazed performance requirements. - Work within a commercial retrofit context. - Respect the architectural identity of an institutional building. - Provide long-term durability for a high-profile organization. In a deep energy retrofit, window selection carries real weight. Poor frame performance, air leakage, or weak thermal detailing can undermine the rest of the envelope strategy. [ The Solution ](#the-solution) ## The Solution: Fiberglass-Frame, Triple-Glazed Windows by Inline Fiberglass Inline Fiberglass supplied new fiberglass-frame, triple-glazed windows for the OAA Headquarters retrofit. Fiberglass was a strong fit for this type of project because it supports several retrofit priorities at once: strength, low conductivity, dimensional stability, and long-term resistance to corrosion. For commercial and institutional buildings, those advantages can help support envelope performance while reducing the risk of premature material wear. Triple glazing added another layer of performance, helping the project team improve thermal comfort and reduce energy loss through the window system. [ Request a Free Quote ](#form) ## Why Inline Fiberglass Made Sense for This Retrofit For the OAA Headquarters, Inline’s fiberglass-frame window systems helped support: ### Better Thermal Performance Supports improved energy efficiency by helping reduce heat transfer through the building envelope. ### Reduced Heat Transfer Fiberglass frames are less conductive than many traditional frame materials used in commercial buildings. ### Long-Term Frame Stability Helps maintain window alignment and performance through changing temperatures and seasons. ### Triple-Glazing Compatibility Supports advanced glass packages commonly used in high-performance retrofit projects. ### Clean Architectural Appearance Slim, durable fiberglass frames complement contemporary commercial and institutional designs. ### Durable Envelope Strategy Contributes to a resilient window system designed for long-term building performance. ## Ontario Association of Architects Project Gallery Explore photos from the OAA Headquarters retrofit and the fiberglass window systems integrated throughout the project. [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-07.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-01-scaled.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-02.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-06.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-08.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-03.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-04.jpeg) ## Triple-Glazed Fiberglass Window Systems The OAA project used Inline Fiberglass window systems as part of a broader envelope upgrade. The live project page references fiberglass-frame, triple-glazed windows and notes Inline’s Series 3000 windows as Passive House International certified. For architects, builders, and commercial project teams, this is the real value of a project like OAA: it shows how fiberglass windows can be used in serious retrofit work where performance, appearance, and long-term durability all matter. Explore related product links: **[Passive House & High-Performance Products](https://inlinefiberglass.com/products/passive-house-high-performance/)** **[Fiberglass Windows](https://inlinefiberglass.com/products/fiberglass-windows/)** **[Commercial Fiberglass Window Systems](https://inlinefiberglass.com/solutions/developers-commercial-projects/)** **[Technical Downloads](https://inlinefiberglass.com/resources/technical-spec-download/)** [ Request a Free Quote ](#form) ## Planning a Similar Window Retrofit? If you are upgrading an institutional, commercial, or high-performance building, the window package can affect comfort, energy use, exterior appearance, and long-term maintenance. Inline Fiberglass can help project teams review the right product path. [ Talk to a Specialist ](tel:1-866-566-5656) [ Start Similar Project ](#form) ## Questions About The Ontario Association of Architects Project Find clear answers to common questions about the Ontario Association of Architects project case study [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What type of project was the Ontario Association of Architects Headquarters retrofit? The OAA Headquarters project was a commercial and institutional retrofit in Toronto. The project included building envelope upgrades intended to improve energy performance and support broader greenhouse gas reduction goals. What window systems did Inline Fiberglass provide? Inline Fiberglass supplied fiberglass-frame, triple-glazed windows for the retrofit. The live project page also references Inline’s Series 3000 windows as Passive House International certified. Why are fiberglass windows useful for commercial retrofits? Fiberglass frames are strong, stable, and less conductive than many traditional frame materials. For commercial retrofits, that can help improve thermal performance, support triple glazing, and contribute to a more durable envelope upgrade. Can Inline support similar commercial or institutional projects? Yes. Inline Fiberglass supports commercial, institutional, high-performance, and residential projects with fiberglass window and door systems. Project teams can request product guidance, technical documents, and quote support. Can architects request product specs or drawings? Yes. Architects, specifiers, builders, and commercial project teams can request product specs and technical support from Inline before selecting the right window system. Are all Inline products Passive House certified? No blanket claim should be made without confirming the exact product and configuration. For Passive House, PHIUS, NFRC, AAMA, or Energy Star details, contact Inline to confirm the correct certification documents for your project. The OAA Headquarters project was a commercial and institutional retrofit in Toronto. The project included building envelope upgrades intended to improve energy performance and support broader greenhouse gas reduction goals. Inline Fiberglass supplied fiberglass-frame, triple-glazed windows for the retrofit. The live project page also references Inline’s Series 3000 windows as Passive House International certified. Fiberglass frames are strong, stable, and less conductive than many traditional frame materials. For commercial retrofits, that can help improve thermal performance, support triple glazing, and contribute to a more durable envelope upgrade. Yes. Inline Fiberglass supports commercial, institutional, high-performance, and residential projects with fiberglass window and door systems. Project teams can request product guidance, technical documents, and quote support. Yes. Architects, specifiers, builders, and commercial project teams can request product specs and technical support from Inline before selecting the right window system. No blanket claim should be made without confirming the exact product and configuration. For Passive House, PHIUS, NFRC, AAMA, or Energy Star details, contact Inline to confirm the correct certification documents for your project. ## Start A Similar Project Tell Inline Fiberglass about your project and the team will help you review the right product path. Whether you need a quote, product specs, or technical support, Inline can help you take the next step with clearer information. Request a quote Subscribe First NameEmailPhone/MobileI am a:– Select –HomeownerArchitectBuilderDeveloperDealerOtherCity/TownProduct needed:– Select –WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sureShare project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided.Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Fiberglass VS Aluminum Windows](https://inlinefiberglass.com/resources/fiberglass-vs-aluminum-windows/) **Published:** June 13, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass vs Aluminum Windows Compare Thermal Performance, Strength, Durability, and Design Flexibility [ Read More ](#article) ## Compare Thermal Performance, Strength, Durability, and Design Flexibility Aluminum windows are known for slim profiles and structural strength. That is why they are often considered for modern homes, commercial buildings, and large glass openings. But aluminum also comes with an important tradeoff: it conducts heat much more readily than fiberglass. Without the right thermal break strategy, aluminum frames can become a weak point in the building envelope. Fiberglass windows offer a different balance. They are strong, dimensionally stable, energy efficient, and well suited for projects where long-term thermal performance matters. **Inline Fiberglass makes premium fiberglass windows and doors for residential, commercial, architectural, and high-performance building needs.** [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Quick Answer: Are Fiberglass Windows Better Than Aluminum? For many residential, commercial, and high-performance projects, fiberglass can be the stronger long-term choice when the goal is to reduce thermal bridging, improve comfort, support durability, and maintain clean frame lines. Aluminum may still be appropriate in some commercial glazing systems, especially where a specific curtain wall or storefront system is required. But for window and door openings where thermal efficiency, frame stability, and long service life are priorities, fiberglass deserves serious consideration. The right choice depends on the project, the opening size, the energy target, the glazing package, and the required documentation. **Planning a project? Inline can help you compare product options and confirm the right fiberglass window path.** [ Talk to a Product Specialist ](tel:1-866-566-5656) ## Fiberglass vs Aluminum Windows: Main Differences | Comparison Area | Fiberglass Windows | Aluminum Windows | |---|---|---| | Thermal Performance | Naturally low conductivity compared with metal frames; helps reduce frame-related heat transfer | Highly conductive unless designed with effective thermal breaks | | Strength | Strong, rigid frame material suitable for durable window systems | Strong and widely used for commercial glazing | | Dimensional Stability | Expands and contracts at a rate closer to glass, helping reduce stress on seals | Expands and contracts differently than glass, which can add stress over time | | Condensation Resistance | Better frame insulation can help reduce cold interior frame surfaces | Conductive frames can be more prone to cold interior surfaces if thermal breaks are insufficient | | Maintenance | Designed for long-term durability and low maintenance | Durable, but coatings and thermal break quality matter | | Design Use | Works well for homes, custom builds, high-performance projects, and select commercial applications | Often used for commercial storefronts, curtain walls, and ultra-slim modern aesthetics | | Best Fit | Projects where comfort, energy efficiency, durability, and clean design matter | Projects where metal framing is specified or required by the glazing system | ## Why Frame Material Matters A window is not only glass. The frame plays a major role in comfort, durability, and long-term performance. In cold, hot, or mixed climates, the frame can become a thermal bridge. That means heat can move through the frame more easily than through the insulated glass unit. For homeowners, this can affect comfort near the window. For architects and builders, it can affect energy modelling, envelope performance, and specification decisions. Fiberglass helps address this issue because it is not a metal. It provides strong structural performance while limiting the kind of heat transfer commonly associated with aluminum framing. Inline’s fiberglass window systems are designed around the strengths of the material: durability, dimensional stability, energy efficiency, and clean design. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Thermal Performance: Fiberglass Has the Advantage The biggest difference between fiberglass and aluminum windows is thermal conductivity. Aluminum is a metal. It transfers heat quickly. Modern aluminum windows often use thermal breaks to reduce this problem, but the frame still depends heavily on the quality of that thermal break design. Fiberglass is different. It is naturally less conductive than aluminum, which helps reduce heat movement through the frame. This can support better comfort, improved energy performance, and less risk of cold frame surfaces in winter. For high-performance buildings, Passive House projects, custom homes, and commercial projects with energy targets, this difference matters. **Good fit for fiberglass:** - Energy-efficient homes - Passive House and high-performance projects - Commercial buildings with thermal performance targets - Renovations where comfort is a concern - Projects using double or triple glazing - Modern homes that still need strong energy performance [ Request Product Specs ](https://inlinefiberglass.com/request-a-quote/) ## Durability and Dimensional Stability Both fiberglass and aluminum are strong materials. The difference is how they behave around glass over time. Glass expands and contracts with temperature changes. Fiberglass has an expansion rate closer to glass than aluminum does. That matters because the frame and glass unit are constantly responding to seasonal temperature swings. When the frame and glass move at very different rates, it can place extra stress on seals and joints. Fiberglass helps reduce that mismatch, supporting long-term frame stability and insulated glass unit performance. For architects, builders, and commercial buyers, this is one of the clearest technical reasons to consider fiberglass instead of aluminum. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Design: Can Fiberglass Support Modern Architecture? Yes. Fiberglass windows can support clean, modern design without relying on aluminum as the default choice. Aluminum is often chosen because it can create thin-looking frames and contemporary profiles. But fiberglass can also support modern design goals, especially when the project needs a better balance between aesthetics and thermal performance. Inline offers fiberglass window systems for different design needs, including fixed, strip, casement, awning, slider, single hung, double hung, and tilt-and-turn configurations. For projects that need large glass areas, clean sightlines, high-performance glazing, or commercial-grade product confidence, Inline can help confirm which fiberglass series is the right fit. **Relevant product paths:** - Fiberglass Windows - 400 Series Strip / Fixed Windows - 300 Series Tilt & Turn Windows - 325 Series Casement and Awning Windows - Passive House & High-Performance Products - Technical Downloads Inline Fiberglass can support homeowners, architects, builders, developers, and dealers with product guidance, specs, and project support. [ Start a Project Inquiry ](https://inlinefiberglass.com/contact/) ## When Aluminum Windows May Still Make Sense Aluminum can make sense when a project specifically requires a metal storefront, curtain wall, or glazing system. It may also be selected for certain commercial façade requirements, ultra-slim sightline goals, or system compatibility reasons. The key issue is not whether aluminum is “bad.” The issue is whether it is the best fit for the building’s performance goals. If thermal performance, comfort, condensation resistance, and long-term dimensional stability are priorities, fiberglass should be part of the comparison. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## When Fiberglass Is Often the Better Fit Fiberglass is often the better fit when the project needs more than a thin frame. Choose fiberglass when the priorities include: - Better thermal performance than typical metal framing - Reduced thermal bridging - Strong frame stability - Long-term durability - Energy-efficient window assemblies - Compatibility with high-performance glazing - Clean design without sacrificing comfort - Residential and commercial project flexibility - Technical documents for specifiers and builders Inline Fiberglass can support homeowners, architects, builders, developers, and dealers with product guidance, specs, and project support. [ Compare Window Series ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## Fiberglass vs Aluminum for Architects and Specifiers Architects and specifiers are usually not comparing window materials in isolation. They are comparing building envelope risk. The key questions are: - What is the frame’s thermal performance? - How does the frame affect the wall assembly? - Can the product support the intended glazing package? - Are technical documents available? - Which product series fits the design? - What certifications or performance data apply? - Can the manufacturer support project-specific questions? Inline’s resource path should make those answers easier to access. For specification-driven projects, use the technical download and spec request paths to confirm product data, drawings, certification scope, and series fit. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Fiberglass vs Aluminum for Commercial Projects Commercial buyers often consider aluminum because it is familiar in the commercial glazing world. But familiarity is not the same as best fit. For commercial projects where thermal performance, durability, and long-term envelope quality matter, fiberglass windows can offer a strong alternative. This is especially relevant for institutional, multi-unit, high-performance, and custom commercial projects where energy efficiency and comfort are part of the project brief. Inline’s fiberglass window systems are designed for residential and commercial applications, with technical support available for project teams that need product guidance before specifying. [ Request Commercial Project Support ](https://inlinefiberglass.com/contact/) ## Fiberglass vs Aluminum for Modern Homes Modern homes often use larger windows, darker frames, cleaner lines, and more glass. That puts more pressure on the frame material. Aluminum may deliver a modern look, but it can create thermal challenges if the frame is not properly designed. Fiberglass gives homeowners and designers another option: clean design with better natural thermal performance than metal framing. For homeowners planning a renovation, custom build, or high-performance upgrade, fiberglass can help balance style, comfort, and durability. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Signs Fiberglass May Be the Better Choice Fiberglass may be a better fit than aluminum if: - The project has energy-efficiency goals. - Comfort near windows is a concern. - The design uses large or high-performance glass. - The building is in a cold or mixed climate. - Condensation risk needs to be reduced. - The owner wants long-term durability. - The project needs technical product support. - The design calls for clean, modern windows without defaulting to metal frames. ## Keep Comparing Window Materials Not sure which frame material is right for your project? Continue comparing options: - [ Fiberglass vs Vinyl Windows ](https://inlinefiberglass.com/resources/fiberglass-vs-vinyl-windows/) - Fiberglass vs Wood Windows - [ Why Fiberglass? ](https://inlinefiberglass.com/resources/why-fiberglass/) - [ Energy-Efficient Windows Guide ](https://inlinefiberglass.com/resources/energy-efficient-windows-guide/) - [ Passive House Windows Guide ](https://inlinefiberglass.com/resources/passive-house-windows-guide/) - [ Window Series Comparison Guide ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## Explore Inline Products - [ Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) - [ Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) - [ Passive House & High-Performance Products ](https://inlinefiberglass.com/products/passive-house-high-performance/) - [ Commercial Fiberglass Window Systems ](https://inlinefiberglass.com/solutions/developers-commercial-projects/) ## Common Questions About About Fiberglass vs Vinyl Windows Find clear answers to common questions about fiberglass windows vs vinyl windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Are fiberglass windows better than aluminum windows? Fiberglass windows are often a better fit when thermal performance, comfort, dimensional stability, and long-term durability are priorities. Aluminum can still be suitable for certain commercial glazing systems, but it is more conductive and usually depends on thermal breaks to reduce heat transfer. Are aluminum windows energy efficient? Some aluminum windows can be energy efficient when they include strong thermal break technology and high-performance glazing. However, aluminum itself is highly conductive, so the frame design must work harder to reduce heat transfer. Do fiberglass windows have slimmer frames like aluminum? Aluminum is often known for slim frame profiles, but fiberglass can also support clean, modern design. The best choice depends on the required sightline, opening size, glazing package, and performance goal. Are fiberglass windows good for commercial buildings? Yes, fiberglass windows can be a strong fit for many commercial and institutional projects, especially where energy efficiency, durability, and technical documentation matter. Project teams should confirm the right Inline product series for the building type and performance requirements. Are fiberglass windows good for Passive House projects? Select fiberglass window and door products may support high-performance and Passive House project goals. Certification scope should always be confirmed by product, configuration, and project requirement before specification. Do fiberglass windows reduce condensation? Fiberglass frames can help reduce the risk of cold interior frame surfaces because they conduct less heat than aluminum. Condensation depends on several factors, including indoor humidity, glazing, installation, frame design, and climate. Which is stronger: fiberglass or aluminum? Both materials are strong, but they perform differently. Aluminum is a strong metal and common in commercial glazing. Fiberglass offers strong structural performance with better natural thermal resistance than aluminum, making it useful where strength and energy performance both matter. How do I know which Inline window series is right for my project? The best series depends on the project type, opening size, operating style, glazing needs, design goals, and performance requirements. Inline can help homeowners, builders, architects, and commercial teams compare product options. ## Compare Fiberglass Window Options for Your Project Choosing between fiberglass and aluminum windows comes down to more than appearance. The right frame material affects comfort, energy performance, durability, and long-term building value. Inline Fiberglass can help you review your project needs and identify the right fiberglass window or door path. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [About](https://inlinefiberglass.com/about/) **Published:** May 25, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Windows and Doors Built Around Long-Term Performance Inline Fiberglass is a Canadian fiberglass window and door manufacturer focused on durable, energy-efficient products for residential, commercial, architectural, and dealer-supported projects. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ About Inline ](#about) ## Since 1992, Inline has focused on one core material: fiberglass. That focus shapes how our team designs, manufactures, finishes, and supports fiberglass windows, entrance doors, sliding patio doors, and high-performance product solutions. Whether you are upgrading a home, planning a custom build, specifying a commercial project, or looking for a trusted product line for your dealership, Inline helps you find the right fiberglass window or door path with clear guidance and practical support. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ Visit a Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## A FocusedFiberglass Window Manufacturer in Canada Inline is not a general window supplier that treats fiberglass as one product option among many. Fiberglass is the material our company is built around. That focus matters because fiberglass windows and doors are often chosen for projects where strength, comfort, durability, thermal performance, and clean design all need to work together. From our Toronto / Etobicoke manufacturing base, Inline supports a wide range of project needs, including: - Fiberglass windows for homes and custom builds - Fiberglass entrance doors - Sliding patio doors - High-performance and Passive House project needs - Dealer-supported product availability [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## How Inline Helps Different Customers Build With Confidence Homeowners, developers, architects, dealers and distributors, every project starts in a different place. Inline will help you choose the right windows and doors to positively impact the comfort, energy performance, durability, and long-term value of your properties. For Homeowners ## Upgrade Your Home with Fiberglass Windows and Doors Inline helps homeowners understand their fiberglass window and door options, compare product paths, and take the next step toward a quote or showroom visit. **Common needs:** comfort, energy efficiency, curb appeal, durability, colour options, service confidence, and help choosing the right product. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) For Architects and Specifiers ## Specify with Clear Product Information Inline supports architects and specifiers with product information, performance data, technical documents, and project-specific guidance. **Common needs:** specs, drawings, certifications, Passive House / PHIUS applicability, custom sizing, product fit, and technical confidence. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) For Builders and Contractors ## Build with Reliable Product Solutions Inline helps builders and contractors source fiberglass windows and doors you can rely on, with consistent quality, clear timelines, and support that keeps projects moving. **Common needs:** product reliability, quote support, clear communication, lead-time clarity, customization, and fit-and-finish confidence. [ Talk to a Product Specialist ](tel:1-866-566-5656) For Developers & Commercial Buyers ## Get the Right Product Guidance for Your Project Inline supports commercial and high-performance projects with fiberglass window and door products backed by documentation, project experience, and technical support. **Common needs:** product performance, commercial proof, documentation, project coordination, long-term durability, and risk reduction. [ Request Project Support ](https://inlinefiberglass.com/contact/) For Dealers & Distributors ## High-Performance Fiberglass for Commercial Builds Inline works with authorized dealers and distributors across select markets. Dealer inquiries should be routed separately from homeowner quote requests. **Common needs:** product line strength, sales support, territory availability, technical documents, warranty/service routing, and product availability. [ Become a Dealer ](https://inlinefiberglass.com/dealer-partnership-inquiry/) Why Inline Focuses on Fiberglass ## Fiberglass is chosen for projects where long-term performance matters. Compared with common window materials, fiberglass can support: ## Strong frame construction ## Dimensional stability ## Energy-efficient design ## Modern clean lines ## Durable long-term finishes ## Residential & commercial Inline’s advantage is not just that it sells fiberglass windows and doors. It is that the company focuses its product knowledge, process, and support around fiberglass. [ Learn Why Fiberglass Matters ](https://inlinefiberglass.com/resources/why-fiberglass/) ## Manufacturing Control That Supports Product Consistency Inline controls more of the product process than many typical window and door sellers. That includes fiberglass lineals, painting, design, and final assembly. For customers, that control supports: - Fiberglass windows for homes and custom builds - Fiberglass entrance doors - Sliding patio doors - High-performance and Passive House project needs - Dealer-supported product availability [ Our Manufacturing Process ](https://inlinefiberglass.com/about/manufacturing-pultrusion/) ## Product Depth for Residential, Commercial, and Dealer-Supported Projects Inline manufactures a broad fiberglass product lineup for different project needs. ## Fiberglass Windows Inline offers several fiberglass window systems, including tilt and turn, casement, awning, fixed, slider, single hung, and double hung options. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Fiberglass Doors Inline offers fiberglass entrance doors and sliding patio doors for residential, design-focused, and performance-driven projects. [ Explore Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) ## High-Performance Products For Passive House, PHIUS, or other high-performance building needs, Inline can help visitors identify the right product path and request the correct documentation. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Dealer-Supported Availability Inline products are available through authorized dealers across select Canadian and U.S. markets. Visitors outside the GTA should use the dealer locator or inquiry path. [ Find a Dealer Today ](https://inlinefiberglass.com/dealers/) ## A Practical Process for Starting Your Project Starting with Inline should be simple. ## 01 ## Tell Us About Your Project You do not need to know every product detail before reaching out. Tell us about your project, and our team will help you move in the right direction. ## 02 ## We Review the Right Product Path Inline will help route your request based on whether you are a homeowner, architect, builder, commercial buyer, dealer, or existing customer. ## 03 ## You Get the Next Step Depending on your project, the next step may be a quote, showroom visit, spec package, dealer referral, technical conversation, or service request. [ Start a Quote Request ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Inline Fiberglass Windows and Doors Find clear answers to common questions about fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where are Inline Fiberglass products made? Inline Fiberglass is headquartered and manufactures from its Toronto / Etobicoke facility at 30 Constellation Court. The company has been operating since 1992 and focuses on pultruded fiberglass window and door products. Is Inline Fiberglass a Canadian fiberglass window manufacturer? Yes. Inline Fiberglass is positioned as a Canadian fiberglass window and door manufacturer serving residential, commercial, architectural, high-performance, and dealer-supported project needs. Does Inline work with homeowners? Yes. Homeowners can contact Inline to discuss fiberglass windows, entrance doors, sliding patio doors, showroom visits, and quote requests. Depending on the project location, the next step may involve Inline directly or an authorized dealer. Does Inline install windows and doors? This should be confirmed by project location. Inline supports product guidance and quote routing, and many markets are served through authorized dealers. Does Inline work with architects and specifiers? Yes. Architects and specifiers can request product specs, technical documents, drawings, certification information, and project support for residential, commercial, and high-performance building projects. Do Inline products support Passive House or PHIUS projects? Select Inline products may support high-performance or Passive House project needs. Certification scope should always be confirmed by product, series, configuration, and project requirements before publishing or specifying. Does Inline sell through dealers? Yes. Inline works with an authorized dealer network in select Canadian and U.S. markets. Visitors can use the dealer locator or contact Inline for dealer-related support. How do I request a quote? Use the Request a Quote form and include your project location, product type, timeline, and any plans or photos you have. Inline will review your request and help route you to the right next step. ## Ready to Learn Whether Inline Is the Right Fit? Tell us about your window or door project. Inline will help you understand your options and take the next step toward the right fiberglass windows, doors, product specs, or dealer-supported path. [ Start a Project Today ](https://inlinefiberglass.com/contact/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Energy Efficient Windows Guide](https://inlinefiberglass.com/resources/energy-efficient-windows-guide/) **Published:** June 14, 2026 **Author:** anthony@webhaven.ca **Content:** # Energy-Efficient Windows: What Really Matters Before You Buy Energy-efficient windows are not just about thicker glass or a better rating label. [ Read More ](#article) ## Understanding Energy-Efficient Window Performance Energy-efficient windows are not just about thicker glass or a better rating label. The best results come from the whole window system: the frame, glass package, spacer, seals, installation details, and how the window fits your climate and project goals. Inline Fiberglass makes fiberglass windows and doors for residential, commercial, architectural, and high-performance building projects. If you are researching energy efficient windows in Toronto, comparing triple pane fiberglass windows, or planning a high performance window package in Canada, this guide will help you understand what to look for before requesting a quote. [ High-Performance Products ](https://inlinefiberglass.com/products/passive-house-high-performance/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## What Makes a Window Energy Efficient? A window is energy efficient when it helps reduce unwanted heat loss, limits drafts, supports indoor comfort, and performs reliably through seasonal temperature changes. The main factors are: - Frame material: The frame should resist heat transfer and stay dimensionally stable. - Glass package: Double pane or triple pane glass, Low-E coatings, and gas fills affect thermal performance. - Spacer system: The spacer between panes influences edge-of-glass heat loss and condensation risk. - Air sealing: Weatherstripping, gasket design, and sash fit help reduce drafts. - Installation: Even a high-performance window can underperform if it is poorly installed. - Climate fit: A window that works well in one region may not be the best fit for a colder, hotter, wetter, or windier location. For homeowners, the plain-English goal is simple: better comfort, fewer drafts, less strain on heating and cooling systems, and windows that are built for long-term performance. For architects, builders, and specifiers, the goal is more technical: lower U-values, appropriate SHGC, airtightness, product documentation, and project-specific performance confidence. ## Energy Performance Should Be Backed by Real Documentation Energy-efficiency claims should not be vague. Look for window performance information that can be reviewed, compared, and matched to your project. Inline’s website strategy should use certification and performance references carefully, with product-specific scope rather than implying every product carries every certification. The project sitemap specifically calls for NFRC, Energy Star, and Passive House references where applicable on this page, and the Master Copy Brief warns against broad claims like “all products are PHIUS certified” unless verified. **What to look for when evaluating window documentation** ## NFRC ratings NFRC data helps buyers and specifiers compare window performance metrics such as U-factor, Solar Heat Gain Coefficient, and visible transmittance. ## Energy Star references Energy Star can help homeowners identify products that meet defined efficiency criteria, but the product, region, and exact configuration still matter. ## Passive House / PHIUS information Passive House and PHIUS references are especially important for high-performance projects, but certification scope must be confirmed by product and configuration. ## Technical documents Architects, builders, and commercial buyers should review product data, drawings, glass package options, and applicable certification documents before specifying a window. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ View Technical Downloads ](https://inlinefiberglass.com/resources/technical-spec-download/) ## How to Choose an Energy-Efficient Window ## 1. Start With the Frame Material The frame is a major part of the window’s total performance. A window can have strong glass, but if the frame transfers heat easily or moves too much with temperature changes, comfort and long-term performance can suffer. Fiberglass is a strong choice for energy-efficient windows because it supports: - Lower heat transfer than highly conductive materials - Long-term dimensional stability - Strong frame profiles for large glass areas - Clean sightlines and durable design options - Compatibility with high-performance glass packages Inline’s positioning is built around fiberglass-only focus, manufacturing control, product breadth, and technical credibility. The Master Copy Brief identifies this as the strongest strategic angle: fiberglass-only focus, vertically integrated manufacturing, premium performance, and residential/commercial versatility. **Buyer takeaway:** Do not judge a window by the glass alone. The frame material matters because it affects heat transfer, air sealing, durability, and how the window performs over time. [ Learn Why Fiberglass Matters ](https://inlinefiberglass.com/resources/why-fiberglass/) ## 2. Understand Double Pane vs Triple Pane Glass Glass has a major impact on window performance. Most buyers compare double pane and triple pane windows because they want to know whether the added performance is worth the investment. **Double pane windows** Double pane windows can work well for many homes and projects, especially when paired with a strong frame, Low-E coating, and proper installation. They may be a practical fit when: - The project has moderate performance targets - Budget is a major consideration - Existing window openings do not require a high-performance package - Comfort improvements are needed, but Passive House-level performance is not the goal **Triple pane windows** Triple pane fiberglass windows are often considered for colder climates, high-performance homes, Passive House projects, comfort-driven renovations, and buildings where reducing heat loss is a priority. They may be a better fit when: - The project is in a cold or variable climate - The home has comfort issues near windows - The project requires lower U-values - The building is targeting high-performance or Passive House standards - Noise reduction and interior comfort are important secondary goals **Buyer takeaway:** Triple pane is not automatically required for every project, but it can be the smarter choice when comfort, cold-climate performance, or high-performance building goals matter. [ Ask a Product Specialist ](tel:1-866-566-5656) ## 3. Pay Attention to U-Value, Not Just R-Value Window performance is often discussed using U-value or U-factor. In simple terms, U-value measures how easily heat passes through the window. A lower U-value generally means better insulation performance. For homeowners, the technical details can feel confusing. The practical question is: **Will this window help keep my home more comfortable in winter and summer?** For architects and builders, the details matter more. U-values, SHGC, visible transmittance, glass configuration, frame type, and product documentation should be reviewed together. **Buyer takeaway:** A lower U-value can indicate better insulation performance, but it should be reviewed alongside the full window configuration and project requirements. ## 4. Consider Solar Heat Gain Energy-efficient windows are not only about keeping heat inside during winter. They also affect how much solar heat enters the building. This is where **Solar Heat Gain Coefficient, or SHGC, matters.** A higher SHGC allows more solar heat into the space. A lower SHGC reduces solar heat gain. The right choice depends on building orientation, climate, shading, glass area, and whether the project is more concerned with winter heating, summer cooling, or both. **Buyer takeaway:** The most efficient window is not always the one with the lowest number in every category. The right glass package should match the building design and climate. ## 5. Do Not Ignore the Spacer System The spacer separates the panes of glass inside an insulated glass unit. It may seem like a small detail, but it can affect edge-of-glass performance, condensation resistance, and long-term comfort. A better spacer system can help reduce thermal bridging at the edge of the glass. This matters because condensation and cold spots often show up first around window edges. **Buyer takeaway:** When comparing energy efficient windows, ask about the full glass package, including spacer type, coatings, gas fill, and total window performance. [ Compare Traditional Window Styles ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## 6. Air Sealing Can Make or Break Comfort A window can have good glass and a strong frame, but if the unit does not seal well, homeowners may still feel drafts. Air sealing depends on: Window design, Sash fit, Gaskets and weatherstripping, Locking pressure, Frame stability and Installation quality. For operable windows, sealing design becomes especially important because moving parts must open, close, lock, and seal properly over time. **Buyer takeaway:** Comfort is not just about glass. Draft reduction depends heavily on window design, sealing, and proper installation. [ Compare Traditional Window Styles ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## 7. Installation Still Matters Even high-performance windows can disappoint if installation is not handled correctly. Gaps, poor flashing, weak air sealing, and incorrect detailing can reduce the benefit of the product. Before starting a project, ask: - Who is responsible for measurement? - Who handles installation or dealer coordination? - What information is needed for a quote? - Are drawings, specs, or product documents available? - How should the window be integrated into the wall assembly? - What happens after the quote request? Inline’s Master Copy Brief recommends being careful about installation claims unless the direct installation model is confirmed. The safer copy approach is to route visitors through quote, dealer, showroom, and product-support pathways instead of implying a universal installation service. **Buyer takeaway:** The product and the installation plan should be discussed together. Good windows need good project execution. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## 8. Match the Window to the Climate Energy efficient windows in Toronto or other Canadian climates need to handle more than a mild temperature range. Cold winters, summer heat, humidity, wind, and seasonal expansion can all affect comfort and performance. That is why high performance windows in Canada should be evaluated based on: Climate zone, Window orientation, Exposure to wind and rain, Desired indoor comfort Glass area, Frame material, Double vs triple pane requirements and Project performance goals. **Buyer takeaway:** The right window package depends on where the building is, how it is designed, and what performance level the project needs. ## How Inline Fiberglass Supports Energy-Efficient Window Projects Inline Fiberglass offers multiple fiberglass window series for different design and performance needs. The right series depends on the project type, desired operation, glass size, ventilation needs, and performance goals. **Consider these product paths** ## For high-performance and Passive House-focused projects Explore Inline’s Passive House and High-Performance Products page to review product pathways and request documentation. ## For large glass and modern designs Review fixed and strip window options where large glass, clean sightlines, and thermal performance are important. ## For ventilation and flexible operation Compare casement, awning, tilt and turn, hopper, slider, single hung, and double hung window options. ## For product selection help Use the Window Series Comparison Guide to choose a window type based on use case, ventilation, glass area, style, and project goals. [ Compare Window Series ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Energy-Efficient Window Buying Checklist Before choosing a window, ask these questions: ## What is the frame made from? Look for a frame material that supports thermal performance, strength, and long-term stability. ## Is the glass double pane or triple pane? Triple pane may be worthwhile for cold climates, and high-performance projects. ## What is the U-value? Lower U-values generally mean better insulation performance. ## What is the SHGC? Solar heat gain should be matched to climate, orientation, and design goals. ## What spacer system is used? The edge of the glass can affect comfort and condensation risk. ## How does the window seal? Air sealing is critical for comfort and draft reduction. ## Who handles installation or project coordination? Confirm the process before ordering. ## Is documention available? Review NFRC, Energy Star, Passive House, PHIUS, AAMA, or relevant documentation. ## Common Questions About Energy-Efficient Windows Find clear answers to common questions about Inline fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Are triple pane windows better than double pane windows? Triple pane windows can provide stronger thermal performance than double pane windows, especially in cold climates or high-performance projects. But they are not automatically the right choice for every opening. The best option depends on your climate, budget, comfort goals, and building design. Are fiberglass windows energy efficient? Fiberglass is well suited for energy-efficient windows because it is strong, dimensionally stable, and less conductive than materials such as aluminum. The total window performance still depends on the full system: frame, glass, spacer, seals, and installation. What is a U-value? U-value measures how easily heat passes through a window. A lower U-value generally means better insulation performance. For serious energy-efficiency comparisons, review the full product configuration and supporting documents. What causes condensation on windows? Condensation can be caused by indoor humidity, cold glass surfaces, poor air circulation, edge-of-glass temperature, or older window performance. Better windows can help reduce cold surfaces, but humidity control and ventilation also matter. Are energy-efficient windows worth it? They can be, especially if your current windows are drafty, uncomfortable, difficult to operate, or poorly suited to your climate. The value is not only energy savings. Comfort, durability, design, and long-term performance also matter. When should I replace old windows? Consider replacement when windows are drafty, difficult to operate, showing seal failure, causing comfort issues, or no longer meeting your design and performance goals. A quote review can help you understand whether replacement or a more targeted product path makes sense. Do energy-efficient windows qualify for grants? Grant programs change over time and may depend on your location, product ratings, installer requirements, and program rules. Check current federal, provincial, municipal, or utility programs before assuming eligibility. Are all Inline products Passive House certified? No blanket claim should be made without confirming the product and configuration. Select Inline products are designed for high-performance building needs. Contact Inline to confirm the right product, certification details, and documentation for your project. What should I send when requesting a quote? Send your name, contact details, project location, product needs, approximate timeline, and any drawings, plans, measurements, or photos you already have. If you are not sure which product you need, say that in the request. ## Need Help Choosing the Right Energy-Efficient Window? You do not need to know every technical detail before reaching out. Tell Inline about your project, location, product needs, and performance goals. The team can help point you toward the right fiberglass window path. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Why Fiberglass](https://inlinefiberglass.com/resources/why-fiberglass/) **Published:** June 13, 2026 **Author:** anthony@webhaven.ca **Content:** # Why Fiberglass Windows? Fiberglass Windows Built for Strength, Comfort, and Long-Term Performance [ Read More ](#article) ## Fiberglass Windows Built for Strength, Comfort, and Long-Term Performance Fiberglass windows are chosen by homeowners, builders, architects, and commercial project teams because the material solves many of the problems that affect traditional window frames over time. Fiberglass is strong, stable, energy efficient, and low maintenance. It helps reduce warping, supports long-term comfort, and gives you more design flexibility than many conventional window materials. At Inline Fiberglass, fiberglass is not one product option among many. It is the material we focus on every day. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Fiberglass vs. Common Window Materials Not every window material performs the same way over time. Windows deal with heat, cold, wind, moisture, sunlight, and daily use. The frame material matters. Fiberglass is a strong choice because it is designed to hold its shape, support energy-efficient glass packages, and perform through changing seasons. ### Key Benefits of Fiberglass Windows ## Strong frame performance Fiberglass provides excellent structural strength, which helps support larger glass areas, clean sightlines, and stable window operation. ## Better dimensional stability Fiberglass expands and contracts at a rate closer to glass than many other common frame materials. That helps reduce stress on the window assembly during temperature changes. ## Energy efficiency Fiberglass has low thermal conductivity, which helps reduce heat transfer through the frame and supports better overall window performance. ## Low maintenance Fiberglass does not rot like wood and does not need the same repainting or upkeep cycle as traditional wood window frames. ## Design flexibility Fiberglass can support clean profiles, custom sizing, different operating styles, and a wide range of colour and finish options. ## Long-term value Fiberglass windows typically cost more than basic vinyl windows upfront, but they are built for buyers who care about durability, comfort, design, and long-term performance. ## Why Choose Fiberglass for Windows? Use this section as a simple comparison, not a hard rule. The right window depends on your project, budget, design goals, and performance needs. ## Fiberglass vs. Vinyl Vinyl is often chosen because it is affordable. For basic projects, that may be enough. Fiberglass is usually the stronger choice when long-term durability, colour stability, frame strength, and energy performance matter more. Fiberglass is less prone to warping under temperature changes and can support a more premium look and feel. **Best fit** for fiberglass: homeowners, builders, and specifiers who want stronger, more stable windows with better long-term performance. [ Fiberglass vs Vinyl Windows ](https://inlinefiberglass.com/resources/fiberglass-vs-vinyl-windows/) ## Fiberglass vs. Aluminum Aluminum is strong and often used in commercial applications, but it conducts heat more easily than fiberglass. Fiberglass offers strength while also helping reduce thermal bridging through the frame. That makes it a strong option for energy-conscious homes, commercial projects, and high-performance building designs. **Best fit** for fiberglass: projects where strength, energy efficiency, and comfort all matter. [ Fiberglass vs Aluminum Windows ](https://inlinefiberglass.com/resources/fiberglass-vs-aluminum-windows/) ## Fiberglass vs. Wood Wood has a traditional appearance, but it can require more maintenance over time. Moisture, repainting, and long-term upkeep are common considerations. Fiberglass gives buyers a durable, low-maintenance alternative while still supporting premium colours, grille options, and clean architectural design. **Best fit** for fiberglass: premium homeowners who want design flexibility without the maintenance expectations of wood. [ Fiberglass vs Woods Windows ](https://inlinefiberglass.com/resources/fiberglass-vs-wood-windows) ## Why Fiberglass Helps Windows Last Windows are exposed to constant movement from seasonal temperature swings. When a frame expands and contracts too much, the window can become harder to operate, seals can experience extra stress, and long-term performance can suffer. Fiberglass helps reduce that risk because it is dimensionally stable. It holds its shape well through changing conditions and works well with modern insulated glass units. **For buyers, that can mean:** - Less concern about warping - More stable operation - Better long-term frame performance - Stronger support for larger glass areas - More confidence in demanding climates This is one of the main reasons fiberglass is used in high-performance window systems. ## How Fiberglass Supports Energy Efficiency Energy-efficient windows are not just about the glass. The frame also matters. A high-performance glass package can lose value if the frame transfers too much heat or cold. Fiberglass helps because it has low thermal conductivity compared with highly conductive frame materials. **That means fiberglass windows can help support:** - Better indoor comfort - Reduced drafts from poor frame performance - Better whole-window energy performance - Compatibility with double- and triple-glazed glass packages - High-performance and Passive House project goals, where applicable For technical projects, confirm the correct product series, glass package, and certification details before specifying. ## Why Inline Focuses on Fiberglass Inline Fiberglass is built around fiberglass windows and doors. That focus matters. Instead of treating fiberglass as a secondary product line, Inline designs and manufactures around the strengths of the material: strength, thermal performance, dimensional stability, clean design, and long-term durability. Inline also controls key parts of the product process, including fiberglass lineals, painting, design, and final assembly, subject to client-approved wording. That gives the team deeper control over quality, finish, and product consistency. For homeowners, that means practical product guidance and window options built for comfort and durability. For architects, builders, and commercial teams, that means access to product information, performance documentation, and technical support for project planning. ## Where Fiberglass Windows Make the Most Sense Fiberglass is a strong fit when you want more than a basic replacement window. ## For Homeowners Choose fiberglass if you want windows that support comfort, curb appeal, energy efficiency, and long-term durability. **Common use cases include:** - Window replacement projects - Custom homes - Modern renovations - Black or custom-colour window designs - Energy-efficient upgrades - Large window openings [ Explore Windows for Homes ](https://inlinefiberglass.com/solutions/homeowners/) ## For Architects and Specifiers Fiberglass can support projects where thermal performance, product data, sizing, and long-term material stability matter. **Common use cases include:** - High-performance homes - Passive House or PHIUS-aligned projects - Commercial and institutional buildings - Custom window specifications - Large glass areas - Projects requiring technical documentation [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## For Builders and Contractors Fiberglass windows are a practical choice for projects where product consistency, durability, finish quality, and clear communication matter. **Common use cases include:** - Custom builds - Residential developments - Commercial retrofits - Energy-conscious renovations - Projects requiring custom sizing or specific product guidance [ Talk to a Product Specialist ](tel:1-866-566-5656) ## Design and Finish Flexibility Fiberglass is not just a performance material. It also supports strong design outcomes. Inline fiberglass windows can be paired with a wide range of options depending on the product series and project requirements, including: - Fixed, casement, awning, tilt and turn, slider, single hung, and double hung styles - Double- and triple-glazed glass packages - Standard and custom colour options - Grilles and SDL bar options - Hardware options - Modern or traditional design profiles This makes fiberglass a good fit for homeowners who care about design and for specifiers who need performance without sacrificing the look of the building. [ View Finish Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) ## Is Fiberglass Worth the Cost? Fiberglass windows usually cost more than basic vinyl windows. That does not make them the right fit for every budget. But for buyers comparing long-term value, fiberglass is often worth considering because it offers a stronger combination of durability, stability, energy efficiency, and design flexibility. Fiberglass may be the better choice if you are trying to avoid: - Warping from seasonal temperature changes - Frequent maintenance - Limited colour options - Poor long-term frame performance - Weak structural support for larger glass areas - A lower-end look on a premium home or commercial project The honest answer: if lowest upfront price is the main goal, fiberglass may not be the best fit. If long-term performance and product quality matter, fiberglass deserves serious consideration. ## Choose the Right Fiberglass Window for Your Project Inline offers multiple fiberglass window systems for different operating styles, design needs, and project types. **Explore options such as:** ## 300 Series Tilt & Turn Windows For versatile operation and high-performance applications ## 325 Series Casement, Awning & Fixed Windows For projects requiring strong outward-opening or fixed window options ## 400 Series Strip / Fixed Windows For larger glass areas and architectural designs ## 700 Series Casement / Hopper Windows For in-swing applications and specific project needs ## 800 Series Horizontal Slider Windows For wide horizontal openings ## 850 Series Single Hung Windows For traditional vertical operation ## 900 Series Double Hung Windows For classic style with flexible ventilation [ Compare Window Series ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Fiberglass Windows Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Why are fiberglass windows better than vinyl windows? Fiberglass windows are generally stronger and more dimensionally stable than vinyl windows. Vinyl can be a lower-cost option, but fiberglass is often chosen for better durability, better long-term shape retention, and more premium design flexibility. Are fiberglass windows energy efficient? Yes, fiberglass windows can support strong energy efficiency. The frame material has low thermal conductivity, and it works well with modern insulated glass packages. Final energy performance depends on the full window design, glass package, installation, and product configuration. Do fiberglass windows warp? Fiberglass is highly stable compared with many traditional window materials. It is less prone to warping from temperature changes, which helps support long-term operation and performance. Are fiberglass windows low maintenance? Yes. Fiberglass windows are considered low maintenance because they do not rot like wood and do not require the same upkeep cycle. That said, no window is “maintenance-free.” Glass, hardware, seals, and finishes should still be cared for according to product guidance. How long do fiberglass windows last? Fiberglass windows are built for long-term performance, but exact lifespan depends on product configuration, installation, climate, exposure, and maintenance. The key advantage is that fiberglass is strong, stable, and well-suited to demanding conditions. Are fiberglass windows more expensive than vinyl? Usually, yes. Fiberglass windows typically cost more upfront than basic vinyl windows. The value comes from durability, energy performance, design flexibility, and long-term stability. Can fiberglass windows be painted or customized? Fiberglass supports a range of finish and colour options. Inline offers standard and custom options depending on the product and project requirements. Confirm available colours, finish details, and custom options with the Inline team. Are fiberglass windows good for Passive House projects? Fiberglass can be a strong fit for high-performance and Passive House projects. Select Inline products may support Passive House or PHIUS project requirements, but certification details should always be confirmed by product series and configuration. ## Ready to Explore Fiberglass Windows? Fiberglass is a smart choice when you want windows built for strength, comfort, durability, and clean design. Tell us about your project and the Inline Fiberglass team will help you understand the right product path. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Architects Specifiers](https://inlinefiberglass.com/solutions/architects-specifiers/) **Published:** June 9, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Windows and Doors for Architects & Specifiers Specify durable, energy-efficient fiberglass window and door systems with the technical support, documentation, and project coordination you need. [ Request a Quote ](#form) [ Explore Products ](https://inlinefiberglass.com/products/) ## Support for Residential, Commercial, and High-Performance Projects Inline Fiberglass supports architects, specifiers, builders, and project teams with product data, performance documentation, drawings, and clear guidance for residential, commercial, and high-performance building projects. Whether you are selecting fiberglass windows for a custom home, reviewing Passive House window specifications, or comparing product systems for a commercial envelope, our team can help you find the right documentation and product path. [ Request Spec Package ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to a Specialist ](tel:1-866-566-5656) ## Product Systems for Architectural Specification You do not need to know every product detail before reaching out. Start with the type of project you have, and Inline can help guide you from there. ## Fiberglass Windows Inline’s fiberglass window systems support a range of architectural applications, from operable residential windows to fixed, strip, and high-performance configurations. **Good fit for:** - Custom homes - Residential developments - Commercial applications - High-performance building projects - Projects requiring durable, energy-efficient windows [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Passive House & High-Performance Products For projects with stricter energy or envelope goals, Inline offers select high-performance product pathways with documentation available by product. **Good fit for:** - Passive House projects - PHIUS-oriented specifications - Energy-efficient buildings - High-performance residential or commercial envelopes [ Request Documentation ](https://inlinefiberglass.com/products/passive-house-high-performance/) ## Fiberglass Doors Inline’s fiberglass entrance doors and sliding patio doors support design flexibility, thermal performance, and durability for residential and commercial applications. **Good fit for:** - Custom entry systems - Large patio openings - High-performance door applications - Residential and commercial projects [ Explore Finerglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors) ## Technical Confidence Starts With Clear Product Information Architectural projects need more than attractive windows and doors. They require products that align with the design intent, performance targets, budget, schedule, and overall building envelope strategy. Inline Fiberglass helps architects, specifiers, builders, and project teams navigate key specification decisions early in the process by providing access to product data, performance information, CAD drawings, PDF details, and technical guidance. The goal is to make specification decisions clearer and more efficient before the project advances into tendering, procurement, or construction. [ Talk to a Specialist ](tel:1-866-566-5656) ## Built Around Fiberglass. Supported With Documentation. Inline Fiberglass is focused on fiberglass windows and doors for projects where long-term performance, comfort, durability, and clean design matter. For architects and specifiers, that focus matters because the product decision is not just visual. It affects thermal performance, dimensional stability, glass selection, envelope detailing, and long-term building operation. **Available technical support may include:** - Product specifications - Window CAD drawings and PDF details - Performance documents - Glazing and configuration information - Certification documents where applicable - Passive House / PHIUS-related product information where applicable - AAMA, NFRC, IGMAC, and other certification references where applicable - Commercial and high-performance project examples - Guidance on product selection, sizing, colours, and options [ Request Product Specs ](https://inlinefiberglass.com/architect-specifier-package-request/) ## A Material Choice That Supports Performance and Design Fiberglass windows and doors are often selected for projects where ordinary window materials may create design or performance trade-offs. Inline fiberglass products are designed to support: ### Thermal performance Fiberglass helps reduce unwanted heat transfer through the frame, supporting better building envelope performance and improved thermal efficiency ### Dimensional stability Fiberglass expands and contracts at a rate closer to glass than many common window frame materials, helping support long-term unit stability. ### Strength and slim profiles Strong frame materials can help support larger glass areas and clean sightlines, depending on the selected product series and project requirements. ### Design flexibility Inline offers fiberglass windows, entrance doors, sliding patio doors, glass options, colours, grilles, and hardware choices for a range of residential and commercial applications. ### High-performance goals Select Inline products may support Passive House, PHIUS, and high-performance project requirements. Contact Inline to confirm the right product, certification detailsfor your project. ### Technical Support Access product data, CAD drawings, installation resources, and technical guidance to support specification, coordination, and project planning before getting started. ## Specification Support From Product Selection to Documentation Inline supports technical decision-making throughout the specification process. ## 01 — Product Selection We help identify which fiberglass window or door series may fit your project application, performance target, design intent, and opening requirements. Relevant product paths may include: Fiberglass Windows, Fiberglass Doors, Passive House & High-Performance Products, Commercial Fiberglass Window Systems, Custom Fiberglass Windows, Glass, Colours, Grilles & Hardware Options [ Explore Product Options ](https://inlinefiberglass.com/products/) ## 02 — Performance and Envelope Review Project teams can request available performance information to support energy-efficiency, comfort, airtightness, and building envelope planning. This may include product-specific data, glazing information, certification references, and high-performance product documentation where applicable. [ Request Performance Documents ](https://inlinefiberglass.com/resources/technical-spec-download/) ## 03 — CAD, PDF, and Technical Downloads Need window CAD drawings, product PDFs, or specification support? Send us your project details and our team will help direct you to the right product documents. [ Download Product Data ](https://inlinefiberglass.com/resources/technical-spec-download/) ## 04 — Custom Sizing, Colours, and Options Inline can help review available product options, including sizing, glass packages, exterior/interior colours, grilles, hardware, and finish considerations. For custom or project-specific requirements, contact the Inline team early so product feasibility can be confirmed before final specification. ## 05 — Commercial and Project Coordination For larger residential, commercial, institutional, or high-performance projects, Inline can help coordinate product information with architects, builders, contractors, developers, and dealer-supported project teams. [ Talk to a Specialist ](tel:1-866-566-5656) ## See Inline High-Performance Fiberglass Windows and Doors In Real Spaces Inline Fiberglass works with project teams that need more than a basic window and door supplier. Architects and specifiers can use Inline’s product information, technical documentation, and project support to make better decisions earlier in the design process. ## Common Questions for Architects & Specifiers Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Are CAD files available? CAD drawings and technical details may be available for relevant Inline product systems. Request a spec package and include the product type, project application, and drawing format you need. Can Inline support Passive House specifications? Select Inline products may support Passive House, PHIUS, and high-performance building requirements. Because certification scope can vary by product and configuration, contact Inline to confirm the right product, certification details, and documentation for your project. Who handles technical questions? Technical and product questions can be submitted through the architect/specifier request form. Inline will review your project details and route your request to the appropriate product or technical contact. What documents are available? Available documents may include product specs, CAD or PDF drawings, performance data, certification references, glazing information, installation-related details, and product option information. Availability depends on the product and project requirements. Can Inline help with product selection? Yes. Inline can help architects and specifiers compare product paths based on application, operating style, glass requirements, performance goals, sizing, colour, and project type. Does Inline support commercial projects? Inline supports residential, commercial, architectural, and high-performance project inquiries. For commercial projects, include the project type, location, approximate quantities, drawings, target performance requirements, and project timeline. Can Inline provide custom sizes or colours? Inline may support custom sizing, colours, glazing, grilles, and hardware options depending on the selected product and project requirements. Submit project details early so feasibility can be reviewed before final specification. How early should we contact Inline? Contact Inline during design development or early specification whenever possible. Early review helps confirm product fit, documentation needs, performance requirements, and project coordination before drawings are finalized. ## How Spec Support Works ## 01 ### Send Your Project Details Tell us what you are working on and what documents or product information you need. ## 02 ### We Review the Product Fit Our team reviews your request and helps identify the relevant Inline product path, documentation, and next step. ## 03 ### Receive Guidance We provide available product data, technical documents, and guidance to help you move the specification forward. ## 04 ### Coordinate Next Step Route the inquiry toward quote support, product review, dealer coordination, or commercial project discussion. ## Request an Architect / Specifier Package Tell us what you are working on. Inline will review your request and help you take the next step. [ Request Spec Package ](https://inlinefiberglass.com/architect-specifier-package-request/) [ Talk to a Specialist ](tel:1-866-566-5656) ## Tell Us About Your Window or Door Project Use this form to request product specs, drawings, certification documents, or technical support for an active or upcoming project. Request a quote Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [TRCA](https://inlinefiberglass.com/projects/commercial/trca/) **Published:** June 12, 2026 **Author:** anthony@webhaven.ca **Content:** # TRCA Fiberglass Window Case Study High-Performance Fiberglass Fenestration for the Toronto and Region Conservation Authority Headquarters [ Start Your Project ](#form) [ View Case Study ](#details) ## High-Performance Fiberglass Fenestration for the Toronto and Region Conservation Authority Headquarters The Toronto and Region Conservation Authority Headquarters was designed as more than an office building. Located beside the Black Creek ravine at 5 Shoreham Drive in Toronto, the four-storey facility brings together mass timber construction, visible environmental strategies, and a high-performance building envelope. Inline Fiberglass supplied fiberglass fenestration systems for this institutional project, helping support the building’s energy conservation goals, solar heat gain control, air infiltration requirements, and long-term envelope performance. [ Start Your Project ](#form) [ Project Snapshot ](#project-snapshot) ## A Conservation Headquarters Built Around Environmental Performance The TRCA Headquarters was created to reflect the organization’s environmental mandate. Its design includes solar chimneys, interior water walls, mass timber construction, and careful siting beside the Black Creek ravine. For a building like this, windows are not simply a visual feature. They are part of the performance strategy. The glazing and frames must help control heat loss, air movement, daylight, comfort, and long-term energy use. Inline Fiberglass was selected to support that envelope strategy with fiberglass fenestration systems built for durability, thermal performance, and clean architectural design. [ The Challenge ](#the-challange) ## Project Snapshot **Project:** Toronto and Region Conservation Authority Headquarters **Location:** 5 Shoreham Drive, Toronto, Ontario **Building Type:** Institutional / Commercial Office / Mass Timber Building **Architect:** ZAS Architects + Interiors and Bucholz McEvoy Architects **Product Used:** Inline fiberglass fenestration systems **Performance Focus:** Energy conservation, solar heat gain management, air infiltration control, lower embodied carbon, and high-performance building envelope support **Best Fit For:** Architects, builders, developers, institutional owners, and commercial project teams planning high-performance window systems ## The Challenge: Support a High-Performance Envelope Without Compromising Design A building with active and passive environmental systems needs a strong building envelope. If the window systems do not perform, the rest of the building strategy can be harder to achieve. The TRCA project required fenestration that could help support: - Energy conservation across a four-storey commercial building - Solar heat gain management - Air infiltration control - Durable performance beside a natural ravine setting - A clean architectural look that works with mass timber construction - Technical confidence for the design and construction team For similar institutional and commercial projects, the right window system needs to do more than fill an opening. It needs to support the building’s performance goals from the early design stage through final installation. [ The Solution ](#the-solution) ## The Solution: Fiberglass Window Systems for Commercial Building Performance Inline Fiberglass supplied fiberglass fenestration for the TRCA Headquarters to help support the building’s thermal envelope. Fiberglass is a strong fit for high-performance commercial and institutional projects because it offers dimensional stability, durability, and low thermal conductivity compared with more conductive frame materials. That makes it especially useful when project teams are focused on comfort, energy efficiency, and long-term envelope performance. For the TRCA Headquarters, Inline’s fiberglass systems helped support the project’s need for: - A tighter, more controlled building envelope - Reduced unwanted air movement - Better alignment with passive design goals - Long-term frame stability - Clean sightlines for a modern institutional building - Performance-focused fenestration support for architects and builders [ Why Inline Fiberglass ](#why-inline) ## Why Inline Fiberglass Was a Strong Fit for This Project Performance-Driven Solutions for Complex Building Projects ### Built for high-performance buildings The TRCA Headquarters was designed around advanced environmental strategies. Inline fiberglass fenestration helped support the type of envelope performance needed for projects where comfort, durability, and energy use all matter year-round. ### Suitable for commercial and institutional applications This project shows how fiberglass windows can support more than residential replacement work. Inline products can be considered for commercial buildings, institutional facilities, multi-unit projects, and high-performance architectural work. ### Strong thermal and air-control support The TRCA Headquarters was designed around advanced environmental strategies. Inline fiberglass fenestration helped support the type of envelope performance needed for projects where comfort, durability, energy use, and long-term building performance all matter. ### Clean design for modern architecture The TRCA building combines mass timber, large openings, and a natural site context. Inline’s fiberglass systems support the visual goals of modern architecture while helping maintain performance at the envelope across changing seasons and environmental conditions. ### Technical support for project teams Architects, builders, and developers need clear product guidance, documentation, and project support. Inline helps project teams review window and door options for commercial, institutional, and high-performance applications through every stage of project planning. ### Products Built for long-term durability Commercial and institutional buildings are expected to perform for decades. Fiberglass is valued for its resistance to warping, rot, corrosion, and temperature-related movement, helping support long-term building performance and reduced maintenance requirements. ## TRCA Project Gallery See how Inline fiberglass fenestration supports the TRCA Headquarters’ clean architectural design, natural light, and high-performance building envelope. [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-05.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-04.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-02.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-03.jpg) ## Support for Commercial, Institutional, and Multifamily Projects Inline Fiberglass supports project teams looking for durable, energy-efficient fiberglass window and door systems for commercial and high-performance buildings. Common project types include: Institutional buildings, Commercial offices, Mass timber buildings, Passive House or high-performance projects, Multi-unit residential buildings, Deep energy retrofits, and Custom architectural projects. Explore related paths: **[Commercial Fiberglass Window Systems](https://inlinefiberglass.com/projects/commercial/)** **[Passive House & High-Performance Products](https://inlinefiberglass.com/products/passive-house-high-performance/)** **[Fiberglass Windows](https://inlinefiberglass.com/products/fiberglass-windows/)** **[Technical Downloads](https://inlinefiberglass.com/resources/technical-spec-download/)** **[For Architects & Specifiers](https://inlinefiberglass.com/solutions/architects-specifiers/)** [ Request a Free Quote ](#form) ## Planning a Similar Commercial or Institutional Project? Inline Fiberglass supports project teams looking for durable, energy-efficient fiberglass window and door systems for commercial and high-performance buildings. [ Talk to a Specialist ](tel:1-866-566-5656) [ Start Similar Project ](#form) ## Questions About The TRCA Project Find clear answers to common questions about this case study [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What type of project is the TRCA Headquarters? The TRCA Headquarters is a four-storey institutional and commercial office building in Toronto. It was designed with environmental performance in mind, including mass timber construction, solar chimneys, water walls, and a strong connection to the surrounding ravine landscape. Why were fiberglass windows a good fit for this project? Fiberglass window systems are a strong fit for high-performance buildings because they help support durability, dimensional stability, thermal performance, and air-control goals. For projects like TRCA, the window system plays an important role in the overall building envelope. Can Inline support similar commercial or institutional projects? Yes. Inline Fiberglass supports residential, commercial, institutional, and high-performance projects with fiberglass window and door systems. Project teams can contact Inline to review product fit, documentation, and technical requirements. Which Inline product series was used on the TRCA project? The available source material confirms that Inline supplied fiberglass fenestration for the TRCA Headquarters, but it does not identify the exact product series. Confirm the specific series with Inline before publishing product-specific claims on this page. Can Inline provide product specs for architects and builders? Yes. Architects, builders, developers, and commercial project teams can request product information, technical documents, and project support from Inline’s team. Is fiberglass suitable for Passive House or high-performance buildings? Select Inline products are designed for high-performance building needs. Project teams should contact Inline to confirm the right product, certification details, and documentation for their specific project. ## Start A Similar Project Tell us about your project and our team will help you review the right fiberglass window or door path. Inline can support product selection, project documentation, and quote requests for residential, commercial, and performance-focused buildings. Request a quote Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Contact](https://inlinefiberglass.com/contact/) **Published:** June 16, 2026 **Author:** anthony@webhaven.ca **Content:** # Contact the Right Inline Fiberglass Team Have a question about fiberglass windows, fiberglass doors, a quote, service, technical documents, or dealer opportunities? Use this page to reach the right department faster. [ Contact Us ](#form) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Visit or Contact Inline Fiberglass Inline Fiberglass is focused on fiberglass windows and doors built for long-term performance, comfort, durability, and clean design. Our team supports homeowners, architects, builders, developers, commercial buyers, and dealers with clear product guidance and practical next steps. **Address:** 30 Constellation Court Etobicoke, Toronto, ON M9W 1K1 **Phone:** [(416) 679-1171](tel:416-679-1171) **Toll-Free:** [1-866-566-5656](tel:1-866-566-5656) **Email:** <info@inlinefiberglass.com> [ Book a Visit to Our Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## What Do You Need Help With? Choose the option that best matches your request. This helps us route your message correctly and avoid delays. ## Request a Quote For homeowners, builders, contractors, developers, and commercial buyers who are ready to discuss a fiberglass window or door project. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Sales Inquiry Use this if you want to ask about product options, project fit, availability, showroom visits, or which Inline product path may be right for your project. [ Submit a Sales Inquiry ](https://inlinefiberglass.com/contact/sales-inquiry/) ## Service or Parts Request For existing customers who need help with a service issue, parts request, warranty-related question, or product support. [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) ## Architect / Specifier Support For architects, designers, consultants, builders, and specifiers who need product data, technical documents, drawings, performance information, or certification details. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Dealer Partnership Inquiry For dealers, distributors, or showroom operators interested in carrying Inline Fiberglass products. [ Become a Dealer ](https://inlinefiberglass.com/dealer-partnership-inquiry/) ## Find an Authorized Dealer Looking for Inline Fiberglass products outside the Toronto / Etobicoke area? Use the dealer locator to find an authorized dealer near you. [ Find a Dealer ](https://inlinefiberglass.com/dealers/) ## Not Sure Where to Start? Tell us what you need help with. Our team will review your message and route it to the right Inline Fiberglass contact. Contact form general Notify First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town I'm interested in: - Select -QuoteShowroom visitSalesServiceSpecsDealer partnershipGeneral questionOther Project notes I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. ## What Happens After You Contact Inline? Once your request is submitted, Inline Fiberglass will review your project information and follow up with the next step. ## 1. We Review Your Request Your message is reviewed and routed based on your inquiry type. ## 2. The Right Team Follows Up A sales, service, technical, dealer, or showroom contact will respond based on what you submitted. ## 3. We Help You Take the Next Step Depending on your request, the next step may be a quote, showroom visit, technical document package, dealer conversation, or service follow-up. [ Contact Us Today ](#form) ## Common Questions About Contacting Inline Find clear answers to common questions about contacting Inline Fiberglass. [ Questions? Contact Us ](https://inlinefiberglass.com/contact/) What is the best way to contact Inline Fiberglass? Choose the contact path that matches your request. Use Request a Quote for new projects, Service Request for existing product or warranty-related support, Request Product Specs for technical documents, and Dealer Partnership Inquiry for dealer opportunities. Where is Inline Fiberglass located? Inline Fiberglass is located at 30 Constellation Court, Etobicoke, Toronto, ON M9W 1K1. Can I visit the Inline Fiberglass showroom? Yes, if showroom visits are currently available. Booking ahead is recommended so the team can prepare for your project type and product questions. Who should I contact for a window or door quote? Use the Request a Quote form. Include your project location, product interest, approximate timeline, and any drawings, measurements, or photos you have available. Who should I contact for service, parts, or warranty support? Use the Service Request form. Include photos, product details, original order information if available, and a clear description of the issue. I am an architect or builder. Where do I request specs or drawings? Use the Architect / Specifier Package Request or Request Product Specs form. Inline can route technical document requests more accurately when you include the project type, product series, and document needs. I am interested in becoming a dealer. Should I use the general contact form? No. Use the Dealer Partnership Inquiry form so your request includes the right business, territory, and product information. Does Inline Fiberglass install directly? Installation and dealer support may vary by project type and location. Contact Inline or your authorized dealer to confirm the right path for your area before assuming direct installation. --- ### [Technical Spec Download](https://inlinefiberglass.com/resources/technical-spec-download/) **Published:** June 21, 2026 **Author:** anthony@webhaven.ca **Content:** # Download Fiberglass Window Technical Data Access product documents, technical drawings, installation guides, warranty information, EPD resources, and certification documents for Inline Fiberglass window and door systems. [ Request Technical Documents ](#form) [ Request Spec Support ](tel:1-866-566-5656) ## Technical Documents Backed by Product Knowledge Specifying windows and doors requires more than a brochure. You need product details, drawings, performance information, installation guidance, and clear support when project requirements are specific. Inline Fiberglass focuses on fiberglass windows and doors for residential, commercial, architectural, and high-performance projects. That focus helps the team support product selection, technical documentation, and practical project guidance. ### Available Support May Include - Product data sheets - CAD and PDF drawings - Installation guides - EPD and sustainability resources - Certification documents, where applicable - Passive House and high-performance product information - Product series guidance - Technical support for project-specific questions **Important note:** Certification and performance details can vary by product, configuration, glass package, and project requirements. Contact Inline to confirm the right documents and product data for your specific project. [ Request Technical Documents ](#form) ## What Technical Documents Can You Request? Whether you are comparing products, preparing specifications, reviewing performance requirements, or coordinating construction details, Inline can help provide the documentation needed to support your next step. ## Product Data Sheets Get technical information for Inline fiberglass window and door systems, including product series details, use cases, options, and available supporting documents. **Helpful for:** architects, builders, contractors, developers, dealers, and project teams comparing product fit. ## CAD and PDF Drawings Request available CAD drawings, PDF details, and window technical drawings to support planning, specification, and coordination. **Helpful for:** design development, construction documents, builder review, and product comparison. ## Installation Guides Access available window installation guide resources and related documents to help project teams understand installation expectations, product handling, and coordination requirements. **Helpful for:** builders, contractors, site teams, and project managers. ## Warranty Documents Request warranty information for Inline fiberglass windows and doors so buyers and project teams can understand coverage, support paths, and documentation requirements. **Helpful for:** homeowners, builders, developers, dealers, and commercial project teams. ## EPD and Sustainability Resources Request available EPD and sustainability documentation for projects where material transparency, embodied carbon, durability, or high-performance building goals matter. **Helpful for:** architects, specifiers, developers, and sustainability-focused project teams. ## Certification and Passive House Documents Request available certification documents and Passive House window specs where applicable. Product-specific confirmation is important, especially when performance targets or certification requirements are part of the project. **Helpful for:** Passive House, PHIUS, high-performance, commercial, and energy-conscious projects. [ Request Technical Documents ](#form) ## Built for Technical Buyers and Project Teams This page is intended for visitors who need clear product information before making a specification, quote, or purchasing decision. ## Architects and Specifiers Access drawings, product data, Passive House window specs, and certification documents to support design and specification decisions. ## Developers and Commercial Teams Get technical documentation and product guidance for commercial, multi-unit, and high-performance building projects. ## Builders and Contractors Request product information, installation guides, and technical documents to help coordinate project planning and quoting. ## Dealers and Distributors Request product resources that support sales conversations, customer education, and product fit discussions. [ Request Technical Documents ](#form) ## How the Download Request Works A Simple Process for Accessing Product Documents and Technical Resources ## 1. Tell Us What You Need Choose the document types, product series, and project type that apply to your request. ## 2. Receive Documents by Email Inline will send available technical documents to the email address provided. ## 3. Ask for Project-Specific Support If your project has specific performance, sizing, certification, or documentation needs, request follow-up from the Inline team. [ Request Technical Documents ](#form) ## Download Technical Documents Complete the form below to request fiberglass window technical data, CAD drawings, installation guides, warranty documents, EPD resources, or Passive House window specs. Technical Spec Download Form Updates First Name Last Name Phone/Mobile Email Company Name Technical Documents Needed Select Technical Documents NeededSpecsCAD or drawingsPerformance dataCertificationsEPDWarrantyInstallation details Products of Interest Select Products of InterestWindowsDoorsPassive HouseProduct AccessoriesInstallation Services Product Series Number Product Series Number3003254006007008008509004500 Share Notes about Requested Documentation I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. ## Common Questions About Technical Documentation Find clear answers to common questions about Technical Documentation. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What file types are available? Available documents may include PDFs, CAD files, product data sheets, installation guides, warranty documents, EPD resources, and certification documents. Availability may vary by product series and document type. Are CAD drawings available for all Inline products? CAD and drawing availability may vary by product series. Submit the form with your product interest and project details, and the Inline team will provide the available files or recommend the next best contact path. Can I request Passive House window specs? Yes. You can request Passive House window specs and high-performance product documentation through this page. Certification and performance details should be confirmed by product, configuration, and project requirements. Are the documents always up to date? Inline aims to provide current product documentation, but technical documents can change as products, testing, and project requirements evolve. For active projects, request confirmation from the Inline team before final specification. Can I request project-specific technical data? Yes. Use the project details field to explain what you need. Include project type, location, product interest, performance targets, and any drawings or plans that may help the team respond. Do I need to be an architect to download documents? No. This page is useful for architects, builders, contractors, developers, dealers, commercial teams, and homeowners working on technical or high-performance projects. Who should I contact if I need help choosing a product? Use the form and select the option for technical consultation. Inline can help route your request based on your role, product interest, and project type. --- ### [Fiberglass Door Replacement](https://inlinefiberglass.com/services/fiberglass-door-replacement/) **Published:** June 18, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Door Replacement in Toronto Upgrade your front door or sliding patio door with a fiberglass door built for long-term comfort, durability, and clean design. [ Request a Free Quote ](#form) [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Fiberglass Door Replacement in Toronto and Ontario Service Areas Upgrade your front door or sliding patio door with a fiberglass door built for long-term comfort, durability, and clean design. Inline Fiberglass manufactures and directly installs premium fiberglass entrance doors and sliding patio doors for replacement projects in Toronto and Ontario service areas. Whether you are replacing an aging front door, improving access to your patio, or upgrading your home’s energy performance, our team can help you choose the right door system and provide a replacement path. [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) [ Request a Free Quote ](#form) ## Replacement Doors Built Around Performance Your exterior doors affect comfort, curb appeal, day-to-day access, and energy efficiency. A poor door can create drafts, make rooms uncomfortable, and weaken the look of your home. Inline Fiberglass focuses on fiberglass windows and doors. That focus helps us support door replacement projects with product knowledge, clear guidance, and door systems designed around the strengths of fiberglass. ## Why homeowners choose Inline fiberglass doors ## Entrance and patio door options Choose from fiberglass front entrance doors and sliding patio doors. ## Built for long-term performance Fiberglass supports strength, durability, dimensional stability, and thermal performance. ## Design flexibility Inline supports custom door requests, including many glass, hardware, sidelite, transom, and colour possibilities. ## Energy-conscious products Inline door systems are designed with comfort and performance in mind. For sliding patio door projects, the 600 Series with triple glazing qualifies for Energy Star Most Efficient. ## Project guidance Not sure where to start? Tell us about your project and our team will help you understand the best next step. ## Replace the Door That No Longer Works for Your Home A door replacement is not just a cosmetic upgrade. The right fiberglass door can improve how your home looks, feels, and performs. Inline supports two main fiberglass door replacement paths: ### Front Door Replacement ## Make your entry stronger, cleaner, and more comfortable. Your front door is one of the first things people see. It also needs to handle daily use, seasonal temperature changes, and exposure to weather. Inline’s 4500 Series Entrance Doors are suited for homeowners who want a premium replacement front door with strong design flexibility. **Use this option if you are replacing:** - An old or drafty front door - A damaged entrance door - A dated builder-grade door - A door with poor curb appeal - A front entry system with sidelites or transoms - A door you want to customize with colour, glass, or style options [ Explore Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ### Sliding Patio Door Replacement ## Open up your home with a stronger, smoother patio door. Sliding patio doors should bring in natural light, connect indoor and outdoor spaces, and operate smoothly. If your current patio door is hard to open, drafty, fogged, or outdated, it may be time to replace it. Inline’s 600 Series Sliding Patio Doors are designed for large openings, modern homes, patio access, and high-performance project needs. **Use this option if you are replacing:** - A drafty sliding patio door - A patio door that sticks or does not glide smoothly - A dated rear-yard or deck access door - A large glass opening - A sliding door in a home renovation or custom build - A door where thermal performance matters [ Explore Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## Why Choose Fiberglass for Door Replacement? Exterior doors need to stay stable, strong, and efficient over time. Fiberglass is a strong fit for door replacement because it supports the practical outcomes homeowners care about most: comfort, durability, energy performance, and design flexibility. ## Fiberglass helps support: ## Better comfort A well-selected fiberglass door system can help reduce drafts and improve comfort near entryways and patio openings. ## Long-term durability Fiberglass is built for strength and stability, making it a strong choice for exterior door applications. ## Cleaner design Fiberglass doors can support a wide range of architectural styles, from traditional front entries to modern patio openings. ## Energy-conscious upgrades Door replacement is an opportunity to improve the performance of one of the most used openings in your home. ## Durable exterior products Fiberglass is a practical option for homeowners who want an exterior door system built around strength, stability, and long-term performance. ## Choose the Right Replacement Door Inline products are built for projects where strength, thermal performance, and design matter. ![Inline Fiberglass 4500 Series black fiberglass double entrance door.](https://inlinefiberglass.com/wp-content/uploads/2026/05/4500-DOUBLE-DOOR-BLACK-1920w-02-1024x1024.webp "4500-DOUBLE-DOOR-BLACK-1920w-02 - Inline Fiberglass - Inline Fiberglass") ## 4500 Series Entrance Doors Best for front entries, side entries, curb appeal upgrades, and custom residential door replacement. **Use this door when your priority is:** - Front entry design - Durability - Custom style options - Glass, sidelite, or transom flexibility - Thermal comfort - A premium replacement door [ View Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ![Inline Fiberglass 600 Series black sliding patio door.](https://inlinefiberglass.com/wp-content/uploads/2026/06/600-DOUBLE-DOOR-BLACK-1920w-03-1024x1024.webp "600-DOUBLE-DOOR-BLACK-1920w-03 - Inline Fiberglass - Inline Fiberglass") ## 600 Series Sliding Patio Doors Best for patios, decks, rear-yard access, large openings, and high-performance sliding door replacement. **Use this door when your priority is:** - Natural light - Outdoor access - Smooth sliding operation - Large glass areas - Energy performance - Modern residential design [ View Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## How the Door Replacement Quote Process Works A Clear Path From Inquiry to Project Support ## 1. Tell us about your door project Send us your project details, including the type of door you want to replace, your location, timing, and any photos or measurements you have available. ## 2. We help you choose the right product path Our team reviews whether your project is best suited for a fiberglass entrance door, sliding patio door, or another Inline product option. ## 3. Review design and performance options We help you think through glass, colour, configuration, hardware, sizing, and performance needs. ## 4. Confirm measurements and project details Final sizing and project details must be confirmed before an order moves forward. Inline installs directly with its own installers and offers a turnkey replacement service that removes existing products and installs new products tailored to the project. ## 5. Move toward quote, production, and next steps Once the project details are clear, Inline can help you move toward the right quote and product path. ## What Inline Homeowners Are Saying The installation team from Inline Fiberglass did a fantastic job. Slava and his team completed the installation to perfection and were professional, courteous, and efficient throughout the entire process. They were great to work with, took pride in their workmanship, and paid close attention to every detail. The finished result exceeded my expectations, and I would highly recommend them for any window project. Thanks again to the Inline Fiberglass team — job well done. jim moulitzi I recently purchased a patio door from Inline Fiberglass and was extremely pleased with the experience. A friend had previously purchased windows from Inline and spoke highly of both the products and the service, so I decided to give them a call. The quality of the door is excellent, and the staff were knowledgeable and helpful throughout the process. I was especially impressed with Thomas Hong’s experience and guidance. I would highly recommend Inline Fiberglass. Jim Malcolm We received exceptional service from the entire team. Dmitry provided honest, practical advice without the typical sales pitch. The installers—Slava, Joe, and Max—demonstrated excellent problem-solving skills when addressing my damaged siding and delivered high-quality results at a fair price. Their attention to detail with the flashing and sealing was exceptional, requiring no follow-up corrections. Overall, it was a top-tier experience. Damian Murawiecki We had a fantastic experience with Inline! Our sales representative, Samantha, was incredibly knowledgeable. The installation team, led by Slava and Igor, was efficient, professional and respectful of our property. They covered all surfaces, communicated progress and issues clearly, and left the space spotless. Now, all that’s left to do is paint the new trim! Overall, it was an extremely positive installation experience. The doors and hardware look amazing! Vera Rumyantseva [ View More Inline Reviews ](https://www.google.com/search?q=inline+fiberlgass+windows&sca_esv=bcc915fd4b92abab&sxsrf=ANbL-n4DWu3wLXo4wmEvGzE35QJvGpXdCQ%3A1781021312308&ei=gDooapvEEuC_ruEPrvH22Ak&biw=1728&bih=992&ved=0ahUKEwibhKG1xfqUAxXgnysGHa64HZsQ4dUDCBA&uact=5&oq=inline+fiberlgass+windows&gs_lp=Egxnd3Mtd2l6LXNlcnAiGWlubGluZSBmaWJlcmxnYXNzIHdpbmRvd3MyBxAAGIAEGA0yBxAAGIAEGA0yBxAAGIAEGA0yBhAAGB4YDTILEAAYgAQYigUYhgMyCxAAGIAEGIoFGIYDMggQABiJBRiiBDIIEAAYiQUYogQyCBAAGIAEGKIESO4NUOgGWLYMcAF4AZABAJgBeqABuwWqAQMyLjW4AQPIAQD4AQGYAgWgAosDwgIKEAAYRxjWBBiwA8ICDRAAGIAEGIoFGEMYsAPCAhcQLhjcBhi4BhjaBhjYAhjIAxiwA9gBAcICBxAjGLACGCeYAwDiAwUSATEgQIgGAZAGFLoGBggBEAEYGZIHAzMuMqAH_jyyBwMyLjK4B4UDwgcFMC4xLjTIBxKACAE&sclient=gws-wiz-serp#lrd=0x882b3985b8b54fdb:0xc3ecfea8b8e61d79,1,,,,) ## Ready to Replace Your Door? Upgrade your entry or patio opening with a fiberglass door built for comfort, durability, and clean design. Tell us what you want to replace and our team will help you choose the right Inline door path. [ Book Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) [ Request a Free Quote ](#form) ## Common Questions About Fiberglass Door Replacement Find clear answers to common questions about Fiberglass Door Replacement. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Do you offer both front door and sliding patio door replacement? Yes. Inline offers fiberglass entrance doors and fiberglass sliding patio doors. If you are not sure which product is right for your project, send us your details and our team can help guide you. What is the best door option for a front entry? For front entry replacement, the main product path is the 4500 Series Entrance Door. It is designed for premium entry applications, including front doors, sidelites, transoms, glass options, and design-focused upgrades. What is the best option for patio door replacement? For patio or deck access, the main product path is the 600 Series Sliding Patio Door. It is suited for sliding openings, natural light, and projects where comfort and performance matter. Can I customize the colour of my fiberglass door? Yes. Inline can do any colour. Confirm finish details, product fit, and any timing impacts during your quote request. Can I add glass, sidelites, or transoms? Yes. Inline supports custom doors and can accommodate many glass, hardware, sidelite, and transom requests depending on the door type and project details. Confirm the exact configuration during your quote. Are fiberglass doors energy efficient? Inline fiberglass doors are designed with performance in mind. For sliding patio door projects, the 600 Series with triple glazing qualifies for Energy Star Most Efficient. The right result depends on the door system, glass package, configuration, and installation details. Contact Inline to confirm product documentation for your project. Do you install the doors directly? Yes. Inline installs directly with its own installers and offers a turnkey replacement service that removes existing products and installs new products tailored to the project needs. Confirm service coverage for your location. How long does a fiberglass door replacement take? Lead times vary depending on the complexity of the project. Request a free quote to confirm the expected timing for your door replacement. What warranty applies to fiberglass doors? Warranty coverage follows Inline’s current website warranty and service terms. Review the current warranty details or ask Inline to confirm the warranty scope for your entrance door or sliding patio door. Can I visit a showroom before choosing a door? Yes. Inline’s showroom is at 30 Constellation Crt, Etobicoke, ON M9W 1K1. Public hours are Monday–Friday, 8:30am–5:00pm, and Saturdays, 10:00am–2:00pm, except holidays. ## Request a Fiberglass Door Replacement Quote Ready to replace your front door or sliding patio door? Tell us about your project and our team will help you take the next step. Request a quote Updates First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Commercial Fiberglass Window Systems](https://inlinefiberglass.com/services/commercial-fiberglass-window-systems/) **Published:** June 18, 2026 **Author:** anthony@webhaven.ca **Content:** # Commercial Fiberglass Window Systems Inline Fiberglass manufactures commercial fiberglass windows for projects where durability, thermal performance, clean design, and technical confidence matter. [ Request a Free Quote ](#form) [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Commercial Fiberglass Window Systems Built for Performance-Driven Buildings From institutional buildings and commercial retrofits to multi-unit residential and high-performance projects, our fiberglass window systems help architects, builders, developers, and project teams source windows built for long-term building envelope performance. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request a Free Quote ](#form) ## Commercial Window Support Backed by Product Depth and Real Project Experience Commercial projects need more than a standard window quote. They need clear product fit, technical documentation, reliable coordination, and confidence that the selected window system supports the building’s performance goals. ## Inline Fiberglass Supports Commercial Project Teams - Fiberglass window systems for commercial buildings, multi-unit residential projects, institutional buildings, and performance-focused developments. - Product series options for fixed glass, strip windows, tilt & turn windows, casement, awning, hopper, slider, single hung, and double hung applications. - Technical documentation and product information - Project examples that show Inline products used in demanding commercial and high-performance building contexts. - Product-specific certification and performance documentation is available. PHIUS applies to 325 Series CSM/AWN/FXD, 400 Series, and 3000 Series TNT/FXD. PHI applies to 3000 Series TNT/FXD. NFRC and AAMA apply to all products. IGMAC glass units apply to all products. Energy Star applies to all triple-glazed and some double-glazed products. ## TRCA Headquarters Inline Fiberglass products were specified as part of the fenestration package for the Toronto and Region Conservation Authority headquarters, a high-performance institutional building designed around strong envelope performance and energy conservation goals. [ View TRCA Case Study ](https://inlinefiberglass.com/projects/commercial/trca/) ## Ontario Association of Architects Headquarters Retrofit Inline Fiberglass window systems were selected for the Ontario Association of Architects headquarters retrofit to help improve building envelope performance and reduce heat loss. [ View OAA Case Study ](https://inlinefiberglass.com/projects/commercial/ontario-association-of-architects/) ## Sifton Helio Building The Sifton Helio Building is a commercial project example where Inline Fiberglass products were used to help support a tightly controlled building envelope. The project required window performance that could work alongside advanced mechanical systems and support long-term building efficiency. [ View Sifton Helio Case Study ](https://inlinefiberglass.com/projects/commercial/sifton-helio-building/) ## For Buildings That Need More Than Standard Product Supply Commercial window decisions affect energy performance, comfort, durability, maintenance, design, and long-term operating costs. Inline’s fiberglass systems are built for teams that need a serious window product, not a generic replacement-window package. Product fit, certification scope, sizing, and documentation should be confirmed with the Inline team during project review. ## Where Commercial Fiberglass Windows Fit Inline commercial fiberglass windows may be considered for: - Commercial buildings - Institutional projects - Multi-unit residential developments - Mixed-use buildings - Deep energy retrofits - Passive House and high-performance projects - Low-rise and mid-rise building applications - Custom homes with commercial-level performance needs - Projects requiring fixed, strip, operable, or large-format window configurations ## Why Fiberglass Makes Sense for Commercial Window Systems Fiberglass is well suited to commercial and high-performance building projects because it combines strength, dimensional stability, thermal performance, and durability. These characteristics can help support occupant comfort, energy-efficiency goals, and reliable building-envelope performance through changing weather conditions and seasonal temperatures. ## Why project teams choose Inline for custom fiberglass windows ## Thermal Performance Fiberglass helps reduce frame-related heat transfer compared with more conductive materials. ## Dimensional Stability Fiberglass expands and contracts at a rate closer to glass, helping support long-term seal performance. ## Design Flexibility Inline can do any colour and offers both standard and oversized products. Details to be confirmed during project review. ## Durability Fiberglass is built for demanding exterior conditions and long service expectations. ## Performance Focused Inline systems can support high-performance project goals when the right specification are selected. ## A Clear Commercial Project Workflow A Clear Path From Inquiry to Project Support ## 1. Send Project Details Start with your project type, location, drawings or plans if available, target timeline, and the window or performance requirements you already know. ## 2. Review Product Fit The Inline team can help identify which fiberglass window series may fit the project based on opening type, performance needs, design intent, and documentation requirements. ## 3. Request Specs and Technical Documents Architects, specifiers, builders, and developers can request product information, performance data, drawings, and certification details where available. ## 4. Coordinate Quote and Project Support Once the project scope is understood, Inline can help move the inquiry toward the right quote, documentation, dealer, or project-support path. ## 5. Confirm Warranty and Service Routing Commercial projects should confirm warranty scope, service process, and support responsibilities based on the product, project type, and purchasing path. ## Commercial Fiberglass Window Product Options Inline offers a range of fiberglass window systems that may support commercial and high-performance projects. ![Inline Fiberglass 300 Series tilt-turn fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/300SERIESOPEN_vector-1920w-1024x1024.webp "300+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## 300 Series Tilt & Turn Windows A high-performance window option for projects that need tilt & turn functionality, fixed window options, and strong air-sealing potential. **Best fit for:** High-performance buildings, multi-unit projects, Passive House-oriented projects, and applications where ventilation and cleaning access matter. [ View 300 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) ![Inline Fiberglass 400 Series strip fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/405SERIESB_vector-1920w-1024x1024.webp "405+SERIES+B_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## 400 Series Strip / Fixed Windows Designed for architectural fixed and strip window applications where clean sightlines, larger glass areas, and performance matter. **Best fit for:** Commercial buildings, institutional projects, modern designs, larger fixed openings, and performance-focused envelopes. [ View 400 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## 700 Series Casement / Hopper Windows An in-swing window option for projects where outward operation may not be suitable. **Best fit for:** Urban buildings, selected commercial applications, and projects where interior operation and cleaning access are important. [ View 700 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/700-series-casement-hopper/) ![Inline Fiberglass 325 Series fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIES_vector1-1920w-fixed-1024x1024.webp "325+SERIES_vector+(1)-1920w - fixed - Inline Fiberglass - Inline Fiberglass") ## 325 Series Fixed Windows A flexible outward-opening window system for residential, commercial, and light commercial applications. **Best fit for:** Projects that need operable casement or awning windows, fixed units, ventilation, and strong performance. [ View 325 Fixed Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-fixed/) ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## 325 Series Casement Windows A flexible outward-opening window system for residential, commercial, and light commercial applications. **Best fit for:** Projects that need operable casement or awning windows, fixed units, ventilation, and strong performance. [ 325 Casement Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-casement/) ![Inline Fiberglass 325 Series awning fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESAWNINGOPEN_vector-1920w-awening-1024x1024.webp "325+SERIES+AWNING+OPEN_vector-1920w-awening - Inline Fiberglass - Inline Fiberglass") ## 325 Series Awning Windows A flexible outward-opening window system for residential, commercial, and light commercial applications. **Best fit for:** Projects that need operable casement or awning windows, fixed units, ventilation, and strong performance. [ View 325 Awning Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-awning/) ## Support for Commercial Teams Commercial buyers should not have to hunt for basic product information. Inline’s commercial window systems page should make the next technical step obvious. Project teams can request: - Product specs and window series information - PDF and CAD drawings for all series - Glass and glazing / Colour and finish options information - Product-specific certification details - Commercial project support - Warranty and service information - Guidance on which series may fit the project [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to a Specialist ](tel:1-866-566-5656) ## Planning a Commercial Window Project? Get clear product direction before you finalize your window package. Send Inline your project details and request support for commercial fiberglass window systems, product specs, drawings, or certification documentation. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Commercial Fiberglass Window Systems Find clear answers to common questions about Commercial Fiberglass Window Systems. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Do you offer commercial fiberglass windows? Yes. Inline Fiberglass manufactures fiberglass window systems that may be used in commercial, institutional, multi-unit, retrofit, and high-performance building projects. Product fit should be confirmed based on the project’s design, opening types, performance needs, and documentation requirements. What types of commercial projects are a fit for Inline fiberglass windows? Inline products may be considered for commercial buildings, institutional projects, multi-unit residential buildings, mixed-use developments, deep energy retrofits, and high-performance projects. The best product path depends on the project scope. Which window series are commonly relevant for commercial projects? Commercial project teams may consider the 400 Series Strip / Fixed Windows, 300 Series Tilt & Turn and Fixed Windows, 325 Series Casement / Awning / Fixed Windows, and 700 Series In-Swing Casement / Hopper Windows. Inline can help confirm which series is appropriate for the project. Can Inline provide technical documents? Yes. Architects, builders, developers, and specifiers can request product specs, drawings, performance information, and certification details where available. Are Inline commercial windows Passive House or PHIUS certified? Select Inline product configurations have PHIUS or PHI documentation. PHIUS applies to 325 Series CSM/AWN/FXD, 400 Series, and 3000 Series TNT/FXD. PHI applies to 3000 Series TNT/FXD. NFRC and AAMA apply to all products, IGMAC glass units apply to all products, and Energy Star applies to all triple-glazed products and some double-glazed products. Can Inline support large fixed windows or strip windows? Yes, Inline offers fiberglass window systems designed for fixed and strip window applications. Final sizing, configuration, and performance requirements should be reviewed with the Inline team. Do you work directly with architects, builders, and developers? Yes. Inline supports project conversations with architects, builders, developers, and commercial buyers. Depending on the project and location, the next step may involve direct project support, dealer coordination, product documentation, or a quote request. What information should I send for a commercial inquiry? Send your project location, building type, approximate number of openings, drawings or window schedules if available, product needs, performance targets, colour requirements, and timeline. What warranty applies to commercial projects? Warranty scope can depend on the product, configuration, project type, and purchasing path. Commercial project teams should confirm warranty terms with Inline during the quote or specification process. Does Inline install commercial windows? Inline installs directly and has its own installers. Inline offers a turnkey replacement service that removes existing windows and installs new products tailored to the project needs. For commercial projects, confirm any region-specific, dealer-supported, contractor-supported, or project-specific installation responsibilities during review. ## Start Your Commercial Fiberglass Window Project Tell us about your commercial window project. Our team will review your request and help you take the next step toward the right fiberglass window system, quote path, or technical documentation. Request a quote Updates First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Passive House Window Supply](https://inlinefiberglass.com/services/passive-house-window-supply/) **Published:** June 18, 2026 **Author:** anthony@webhaven.ca **Content:** # Passive House Window Supply for High-Performance Projects When your project depends on thermal performance, airtightness, durability, and technical documentation, ordinary window products are not enough. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Built For Projects Where Performance Matters Inline Fiberglass supplies high-performance fiberglass windows and doors for Passive House, PHIUS, residential, commercial, and architectural projects across Canada. Our team helps architects, builders, developers, and performance-focused homeowners identify the right product pathway, review available documentation, and move forward with confidence. Select Inline products are designed for high-performance building needs. Contact Inline to confirm the right product, certification details, U-value documentation, drawings, and configuration options for your project. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Product Support Backed by Testing, Documentation, and Fiberglass Expertise Passive House projects require more than a good-looking window. They require product confidence, verified documentation, and practical support before the specification is finalized. Inline supports performance-focused projects with: - Fiberglass window and door systems designed for long-term strength, stability, and thermal performance - Select PHIUS / Passive House product pathways for high-performance building applications - IGMAC-certified insulating glass units for long-term performance - Technical documents and product information - Project support to help confirm product fit, configuration, and documentation needs ## Tested and Confirmed to Perform Our windows and doors meet the rigorous standards of Passive House , Phius & Energy Star certification, ensuring superior energy efficiency and comfort in your home. Designed to minimize energy consumption, they provide a sustainable solution for modern living. ![Logo for Passive House Institute: a red stylized P with a yellow abstract shape and the words Passive House Institute.](https://inlinefiberglass.com/wp-content/uploads/2026/07/Passive-house-institute-log-01.jpg "Passive-house-institute-log-01 - Inline Fiberglass - Inline Fiberglass") ## Passive House Certification Our windows and doors are Energy Star certified, ensuring they meet strict energy efficiency guidelines set by the EPA. This certification helps you save on energy bills while contributing to a healthier environment. [ View Details ](https://database.passivehouse.com/en/components/manufacturer/inline-fiberglass-ltd/) ![Phius logo: turquoise circular emblem on the left and the word 'phius' in gray lowercase on the right.](https://inlinefiberglass.com/wp-content/uploads/2026/07/phius-logo-01.jpg "phius-logo-01 - Inline Fiberglass - Inline Fiberglass") ## PHIUS Certification Inline Fiberglass products are certified by PHIUS, guaranteeing that they adhere to the highest performance standards for energy efficiency. This certification reflects our commitment to sustainable building practices and quality craftsmanship. [ View Details ](https://www.phius.org/window-database?_page=1&keywords=inline&_limit=20) ![Energy Star certification logo on blue background, featuring a white star and the word 'Energy' in script above 'ENERGY STAR'.](https://inlinefiberglass.com/wp-content/uploads/2026/07/energy-star-logo-01.jpg "energy-star-logo-01 - Inline Fiberglass - Inline Fiberglass") ## Energy Star Certification Our windows and doors are Energy Star certified, ensuring they meet strict energy efficiency guidelines set by the EPA. This certification helps you save on energy bills while contributing to a healthier environment. [ View Details ](https://natural-resources.canada.ca/energy-efficiency/energy-star/windows-doors-skylights-manufacturers-energy-star-canada-participants) ## Passive House Window Supply Without the Guesswork High-performance projects can stall when product information is unclear. This page is built to help your team move from research to product selection faster. Inline can support conversations around: ## Product Selection Choose from fiberglass window and door systems based on the needs of your project, including fixed windows, operable windows, sliding doors, glass options, frame performance, and design goals. ## Technical Documentation Request available product data, performance values, certification documents, drawings, and other technical resources needed for early planning or specification review. ## Architect and Builder Coordination Get support when comparing series, reviewing envelope goals, preparing project details, or confirming whether a specific Inline product pathway fits the intended building performance target. ## Residential and Commercial Applications Inline products can support performance-focused homes, custom builds, renovations, multi-unit projects, and commercial buildings where durability and energy performance are priorities. ## Commercial Fiberglass Window Product Options Inline offers a range of fiberglass window systems that may support commercial and high-performance projects. ![Inline Fiberglass 600 Series black sliding patio door.](https://inlinefiberglass.com/wp-content/uploads/2026/06/600-DOUBLE-DOOR-BLACK-1920w-03-1024x1024.webp "600-DOUBLE-DOOR-BLACK-1920w-03 - Inline Fiberglass - Inline Fiberglass") ## 600 Series Sliding Patio Doors A high-performance sliding door pathway for projects that need large openings, indoor-outdoor access, and stronger thermal performance than typical sliding door systems. **Best for:** Patios, terraces, modern homes, high-performance residential projects, commercial or multi-unit applications where applicable. [ Request 600 Series Door Specs ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ![Inline Fiberglass 400 Series strip fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/405SERIESB_vector-1920w-1024x1024.webp "405+SERIES+B_vector-1920w - Inline Fiberglass - Inline Fiberglass") ## 400 Series Strip / Fixed Windows A strong option for projects that need large fixed glass areas, clean sightlines, and high thermal performance. This series is especially relevant for architectural and commercial projects. **Best for:** Large fixed openings, strip window applications, commercial projects, architectural homes, high-performance envelopes. [ Request 400 Series Specs ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") ## Other Fiberglass Window Options Depending on the project, other Inline fiberglass window series may also be relevant. The right choice depends on window operation, size, glazing, project type, climate zone, and certification requirements. Contact Inline Fiberglass today to learn more and find options that work best for your specific project or use case. [ Ask Which Series Works Best ](tel:1-866-566-5656) ## Why Fiberglass Makes Sense Fiberglass is well suited to performance-focused window and door design because it supports strength, dimensional stability, and thermal performance. For project teams, that can help with: - Reducing thermal bridging concerns at the frame - Supporting long-term frame stability - Allowing larger glass areas with strong frame performance - Improving product durability across changing Canadian conditions - Supporting clean modern design without treating performance as an afterthought Inline focuses on fiberglass windows and doors. That focus gives the team deeper product knowledge and a clearer path for helping architects, builders, and owners choose the right system. ## How the Passive House Supply Process Works A Clear Path From Inquiry to Project Support ## 1. Share Your Project Details Send your project location, building type, rough opening details, drawings if available, and the performance goals you are trying to meet. ## 2. Review Product Fit The Inline team helps identify which fiberglass window or door systems may fit the project and what documentation should be reviewed. ## 3. Confirm Documentation Request available specs, drawings, performance data, PHIUS or Passive House-related documentation, and other product details needed for your team. ## 4. Coordinate Next Steps Once the product direction is clear, Inline can help move the conversation toward quoting, product selection, and the right sales or dealer-supported pathway. ## 5. Confirm Warranty and Service Routing Commercial projects should confirm warranty scope, service process, and support responsibilities based on the product, project type, and purchasing path. ## Who This Service Is For Inline’s product range supports residential, commercial, architectural, and high-performance applications. Use these product paths if you already know what you are looking for. ## Architects and Specifiers Use this page to request product specs, drawings, certification details, and technical support before specifying Inline products. ## Builders and Contractors Get practical product guidance before quoting or ordering for a high-performance build. ## Developers and Commercial Teams Review fiberglass window and door pathways for commercial, institutional, multi-unit, or energy-focused building projects. ## Homeowners Ask which Inline products may support your Passive House or energy-efficient home project, then work with the right project contact to move forward. ## Start Your Passive House Window Supply Request The right window and door package depends on your project goals, climate zone, product configuration, and documentation needs. Tell Inline about your project and request the specs, drawings, and product guidance needed to move forward. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to a Specialist ](tel:1-866-566-5656) ## Common Questions About Passive House Window Supply Find clear answers to common questions about Passive House Window Supply. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Are all Inline windows Passive House certified? No. Certification is product- and configuration-specific. Select Inline products are designed for high-performance building needs, and specific documentation should be confirmed before specification. Which Inline products are relevant for Passive House projects? The 400 Series Fixed Window and 600 Series Sliding Door are key high-performance product pathways to review. Other products may also be suitable depending on the project requirements, but eligibility must be confirmed by product, glass package, size, and documentation. Can Inline provide U-values and performance data? Available performance data can be requested for relevant product configurations. For Passive House or PHIUS projects, confirm the exact documentation needed with Inline before using values in a specification. Do you supply Passive House doors? Inline offers high-performance fiberglass door systems, including sliding patio door options that may be relevant for Passive House and high-performance projects. Confirm the current documentation and product configuration with the Inline team. Can Inline support projects outside Toronto? Inline is based in the Toronto / Etobicoke area and supports projects through product supply and dealer-supported pathways where applicable. For projects outside the GTA, contact Inline to confirm the right sales, dealer, or support route. Do you provide drawings and technical documents? Yes, technical documents may be available for relevant products. Architects, builders, and specifiers should request the product package needed for their project. Can homeowners request Passive House window support? Yes. Homeowners planning a high-performance home, major renovation, or custom build can contact Inline to discuss product options and next steps. What information should I send before requesting specs? Send your project location, building type, product types needed, approximate sizes, drawings if available, target performance goals, and timeline. This helps Inline route your request properly. --- ### [Services](https://inlinefiberglass.com/services/) **Published:** June 17, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Window and Door Services for Every Project Whether you are replacing windows in a home, planning a custom build, or selecting products for a commercial project, this page will help you find the right service path. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ Find Your Solution ](#solutions) ## Fiberglass Window and Door Services for Homes, Builds, Commercial Projects, and Service Needs Inline Fiberglass focuses on fiberglass windows and doors built for long-term performance, comfort, durability, and clean design. Explore the service category that matches your project, then request a quote, ask for product guidance, or submit a service request. [ Request a Free Quote ](#form) [ Find the Right Service ](#service-route) ## What Do You Need Help With? Choose the path that best matches your project. ## Fiberglass Window Replacement For homeowners and renovators replacing old, inefficient, damaged, or outdated windows with durable fiberglass window systems. **Best for:** Home upgrades, energy-efficiency improvements, comfort issues, design updates, and residential renovations. [ Explore Window Replacement ](https://inlinefiberglass.com/services/fiberglass-window-replacement/) ## Fiberglass Door Replacement For homeowners and project teams replacing entrance doors or sliding patio doors with fiberglass door systems designed for durability, comfort, and clean design. **Best for:** Front entries, patio openings, renovation projects, curb appeal upgrades, and energy-conscious door replacement. [ Explore Door Replacement ](https://inlinefiberglass.com/services/fiberglass-door-replacement/) ## Custom Fiberglass Windows For projects that need product guidance around sizing, configuration, colours, glass, grilles, hardware, or architectural design goals. **Best for:** Custom homes, unique openings, design-led renovations, modern builds, and projects where standard options may not be enough. [ Explore Custom Windows ](https://inlinefiberglass.com/services/custom-fiberglass-windows/) ## Commercial Fiberglass Windows For builders, developers, architects, and commercial teams looking for fiberglass window products for larger or more technical project needs. **Best for:** Commercial buildings, multi-unit projects, institutional work, performance-driven designs, and technical product planning. [ Explore Commercial Systems ](https://inlinefiberglass.com/services/commercial-fiberglass-window-systems/) ## Passive House Window Supply For high-performance projects that need careful product selection, technical documentation, and confirmation of product-specific certification details. **Best for:** Passive House, PHIUS, high-performance homes, energy-efficient buildings, and specification-led projects. [ Request Spec Support ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Service & Parts Requests For existing customers or project teams who need help with service information, parts, warranty routing, or product support. **Best for:** Existing Inline products, issue reporting, parts questions, documentation, photos, and service request intake. [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) ## Built Around Fiberglass. Organized Around Your Project. Inline Fiberglass is not a general window and door company offering fiberglass as one option among many. Fiberglass is the material Inline is built around, and has focused on for decades. That focus helps support clear product guidance, specialized manufacturing expertise, and a deeper understanding of fiberglass performance across a wide range of project types. Whether the project involves residential replacement, a custom home, a commercial building, a high-performance enclosure, or dealer-supported work, Inline’s product lineup is organized around fiberglass from the start. ## Why Visitors Choose Inline Services ## Fiberglass-focused product guidance Get help choosing the right window or door product path instead of sorting through generic material options. ## Residential and commercial versatility Inline supports homeowners, builders, architects, developers, dealers, and commercial project teams with different levels of product and project information. ## Performance-minded options Explore fiberglass windows, fiberglass doors, sliding patio doors, and high-performance product pathways for comfort, durability, and energy-conscious design. ## Technical support when needed Architects, builders, and commercial teams can request product specs, drawings, certification details, and technical documents where available. ## Clear routing for sales and service Quote requests, spec support, dealer inquiries, and service requests should each follow the right path so visitors are not forced into the wrong form. ## Find the Right Inline Service Choose the service that best matches your project. ## Fiberglass Window Replacement Old windows can affect comfort, design, and long-term performance. Inline helps explore fiberglass window replacement options for projects where durability, energy efficiency, anddesign matter. Use this service path if you are replacing windows in a home, planning a renovation, comparing window styles, or looking for better long-term performance than common replacement-window materials. **Common project needs:** - Replacing aging or inefficient windows - Improving comfort and reducing drafts - Updating the look of a home - Choosing window styles, glass, colours, grilles, and hardware - Understanding the quote process [ Start a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Fiberglass Door Replacement Inline’s door service path helps visitors explore fiberglass entrance doors and sliding patio doors for renovation and project needs. Use this path if you are replacing an entrance door, upgrading a patio opening, planning a front entry redesign, or looking for a more durable door product. **Common project needs:** - Replacing a front entry door - Upgrading a sliding patio door - Improving comfort near doors and large openings - Matching door design with window upgrades - Reviewing colour, glass, sidelite, and configuration options [ Start a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Custom Fiberglass Windows Some fiberglass window projects need more than a standard product choice. Inline can help visitors think through product series, operation type, sizing, colour, glass, grilles, hardware, and project fit. Use this path if your project includes unique openings, specific design goals, larger glass areas, performance requirements, or custom planning needs. **Common project needs:** - Custom window sizing - Large fixed or strip windows - Modern or traditional design requirements - Colour and finish selection - Double or triple pane glass discussion - Product series guidance [ Custom Fiberglass Windows ](https://inlinefiberglass.com/services/custom-fiberglass-windows/) ## Commercial Fiberglass Windows Commercial projects need confidence in product performance, documentation, and project fit. Inline supports commercial and high-performance projects with fiberglass window and door products backed by technical documentation and project experience. **Common project needs:** - Commercial fiberglass windows - Product data and technical documents - Project coordination and specification support - Commercial project examples - Performance and certification questions - Product selection for larger openings or building envelope goals [ Request Commercial Support ](https://inlinefiberglass.com/services/commercial-fiberglass-window-systems/) ## Passive House Window Supply High-performance building projects need careful product selection and accurate documentation. Inline can help project teams review the right fiberglass window and door options, Because certification details can vary by product and configuration, visitors should contact Inline to confirm the right product, certification details, and documentation for their project. **Common project needs:** - Passive House window supply - PHIUS-related product questions - High-performance fiberglass windows - Triple pane or advanced glass package discussion - Technical downloads - Architect and builder support [ Request Product Support ](https://inlinefiberglass.com/services/passive-house-window-supply/) ## Service & Parts Requests Existing customers and project teams should not have to use a sales form for service needs. The service request path helps route product issues, parts requests, warranty-related questions, and support details to the right team. Use this path if you already have Inline products and need to submit details about an issue, part, product line, building type, photos, or work order information. **Common service needs:** - Service request intake - Parts request support - Warranty routing - Product issue details - Photos and documentation - Follow-up expectations [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) ## Which Service Fits Your Project? Not every visitor comes to Inline with the same goal. Some are planning a window or door replacement, some are researching products for a custom home or commercial project, and others need technical documentation, service support, or warranty information. To make the process easier, we have organized our services by audience and project type. Choose the path that best matches your needs ## Why Visitors Choose Inline Services ## For Homeowners You may be looking for fiberglass window replacement, fiberglass door replacement, a showroom visit, or help choosing the right product. Inline’s service paths are designed to make the next step easier, even if you do not know the exact product series yet. **Recommended next steps:** Request a Quote, Explore Window Replacement, Explore Door Replacement, Visit the Showroom ## For Architects and Specifiers You may need product specs, technical downloads, performance data, drawings, or product-specific certification details. Inline’s service and product pages should make it easier to move from early research to specification support. **Recommended next steps:** Request Product Specs Explore Passive House Window Supply Explore Commercial Systems Download Technical Documents ## For Builders and Contractors You may need clear product information, quote support, lead-time discussion, custom sizing guidance, or documentation for a residential or light commercial build. **Recommended next steps:** Request a Quote Explore Custom Fiberglass Windows Explore Commercial Systems Talk to a Product Specialist ## For Developers and Commercial Project Teams You may need commercial product confidence, project examples, technical documentation, and a clear inquiry path for larger project planning. **Recommended next steps:** Request Commercial Project Support View Commercial Projects Request Product Specs ## For Existing Customers You may need help with an existing product, part, warranty question, or service issue. Use the service request path so your request is routed correctly. **Recommended next steps:** Submit a Service Request Review Warranty Information Contact Inline ## See How Inline Products Fit Real Projects Fiberglass window and door services are easier to understand when you can see the product in context. Explore residential, commercial, and high-performance project examples to see how Inline products support different building types, design goals, and performance needs. All Residential Projects Commercial Projects Passive House / High-Performance [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Fiberglass-Windows-Doors-Engineered-in-Canada-20.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Fiberglass-Windows-Doors-Engineered-in-Canada-20.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-25.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-25.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-08.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-08.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-09.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-09.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-07.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-07.jpeg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-20.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-20.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-003.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-003.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-06.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-06.jpeg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/850-series-01.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/850-series-01.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-05.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-05.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-19.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-19.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-04.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-04.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-04.j10peg.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-04.j10peg.jpeg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-03.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-03.jpeg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-14.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-14.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-01.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-01.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-16.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-16.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-21.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-21.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-12.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-12.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-400-series-04.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-400-series-04.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-18.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-18.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-15.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-15.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-14.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-14.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-04.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-04.jpg) ## How to Start Your Project A Clear Path From Inquiry to Project Support ## 1. Choose the right service path Start with the service that matches your need: window replacement, door replacement, custom windows, commercial systems, Passive House support, or service and parts. ## 2. Send the right project details Share your project location, product interest, timeline, and any photos, drawings, measurements, or service details that may help the team understand your request. ## 3. Inline helps route the next step Depending on your request, the team can help you move toward a quote, product guidance, technical support, dealer routing, showroom visit, or service follow-up. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Inline Services Find clear answers to common questions about Inline Fiberglass services. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What services does Inline Fiberglass offer? Inline Fiberglass offers service paths for fiberglass window replacement, fiberglass door replacement, custom fiberglass windows, commercial fiberglass window systems, Passive House window supply, and service or parts requests. Can Inline help with new builds and renovations? Yes. Inline’s service paths are designed for both renovation and new-build project needs. Homeowners may use the replacement or custom window paths, while builders, architects, and developers may use the commercial or spec support paths. Can these services support commercial projects? Yes. Commercial project teams can explore commercial fiberglass window systems, request product specs, review project examples, and ask for technical support. Can Inline support Passive House or high-performance projects? Inline can support high-performance project discussions and product documentation requests. Certification scope should be confirmed by product and configuration before using a product in a Passive House or PHIUS-specific project. Does Inline install directly? Installation details should be confirmed with Inline. Some projects may involve dealer, contractor, or project-team coordination depending on location and project type. This claim should not be overstated unless the client confirms the direct installation model. What information should I provide when requesting a quote? Include your name, contact information, project location, product interest, timeline, and project details. Photos, drawings, measurements, or plans can help, but they should not be required too early unless needed for the specific request. I already have Inline products. Should I request a quote or submit a service request? If you need help with an existing product, use the Service & Parts Request path. If you are planning a new window or door project, use Inline’s Request a Quote form. Can I request technical documents before asking for a quote? Yes. Architects, builders, developers, and performance-focused buyers should use the product specs or technical support path if they need documentation before submitting a full quote request. ## Ready to Start the Right Fiberglass Window or Door Path? Tell Inline about your project and the team will help you take the next step. Whether you need a quote, product guidance, technical documents, commercial support, or service help, the right form will help route your request more efficiently. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Builders Contractors](https://inlinefiberglass.com/solutions/builders-contractors/) **Published:** June 9, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Windows and Doors for Builders and Contractors Your window and door package has to fit the build, the schedule, and the spec. [ Request a Quote ](#form) [ Learn more ](#details) ## Supporting Builders From Planning to Project Delivery Inline Fiberglass helps builders and contractors source fiberglass windows and doors for custom homes, renovations, and light commercial projects. Our team supports trade professionals with clear product guidance, quote support, technical documentation, and practical next steps from early planning to order coordination. As a fully vertically integrated fiberglass window and door manufacturer, Inline supports project teams that need durable products, clean design, reliable fit and finish, and clear communication before an order moves forward. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## A Product Partner Built for Project Confidence Builders and contractors do not need vague product claims. You need product fit, clear quoting, practical documentation, and fewer surprises during the build. Inline supports trade projects with fiberglass window and door options designed for long-term performance, comfort, durability, and clean design. Inline offers fiberglass window and door systems for a range of project types, including: - Fiberglass windows for homes and custom builds - Fiberglass entrance doors - Sliding patio doors - High-performance and Passive House-minded project needs - Residential and light commercial applications - Dealer-supported product availability in select markets [ Explore Fiberglass Products ](https://inlinefiberglass.com/products/) ## Fiberglass Window and Door Options for Trade Projects Inline can support builders and contractors working on projects where performance, durability, and design flexibility matter. ## Custom Homes and Renovations For custom homes and renovations, fiberglass windows and doors can help support comfort, clean design, and long-term durability. Inline can help builders review product options, finish choices, glass packages, and project requirements before the quote moves forward. [ Explore Fiberglass Products ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Additions / Replacement Projects When a project involves existing openings, product fit and coordination matter. Inline can help review available window and door paths, required information, and the next steps needed to support a clear quote. [ Request a Free Quote ](#form) ## Light Commercial Builds For light commercial or mixed-use projects, the conversation often includes product durability, documentation, performance requirements, and coordination with architects or project teams. [ Commercial Project Support ](https://inlinefiberglass.com/services/commercial-fiberglass-window-systems/) ## High-Performance Options Select Inline product series are available with PHIUS, PHI, NFRC, AAMA, IGMAC, and Energy Star certifications, depending on the product and configuration. [ Request Product Specs ](https://inlinefiberglass.com/products/passive-house-high-performance/) ## Manufacturing Control That Supports Consistency Inline is a fully vertically integrated fiberglass window and door manufacturer, with a process that includes pultrusion, painting, assembly, and quality control. That helps support product consistency, finish quality, and better alignment between product guidance and the finished window or door package. For builders and contractors, this matters because small product issues can create larger site problems. The goal is simple: help you choose the right product path early, confirm key details before ordering, and reduce avoidable back-and-forth. [ Talk to a Product Specialist ](tel:1-866-566-5656) ## How the Builder and Contractor Workflow Works The trade path is designed to make the process easier to start and easier to manage. You do not need every final detail before contacting Inline. Start with the project information you already have. The more complete the details, the easier it is for the team to guide the quote, product fit, and next step. ## Step 01 — Share the Project Basics **Send the core details first:** Project location Project type Product interest Rough timeline Plans, elevations, or drawings if available Rough opening sizes or measurements if available Window and door quantities if known Colour, glass, grille, or hardware preferences Any performance or documentation requirements **Helpful Note:** Plans, photos, drawings, and rough measurements can help speed up review, but final requirements should be confirmed before ordering. ## Step 02 — Confirm the Right Product Path Inline can help you review which fiberglass window or door systems may fit the project. **This may include:** Casement, awning, fixed, slider, single hung, double hung, or tilt and turn window options Fiberglass entrance doors Sliding patio doors Glass and finish options Any colour, based on project requirements Standard and oversized product options High-performance product considerations Technical document needs The goal is to help you avoid choosing a product that looks right on paper but creates issues later. ## Step 03 — Review Quote Requirements After the project details are submitted, the team can guide the next step toward a quote. For a smoother quote process, include as much detail as possible. If the project is still early, Inline can help identify what information is needed before a quote can be finalized. [ Request a Free Quote ](#form) ## Step 04 — Coordinate Specs, Options, and Order Details Before a project moves forward, key details should be reviewed clearly. This can include product series, sizing, finish, glass package, hardware, grille options, documentation needs, delivery or dealer support, and any project-specific notes. ## Step 05 — Get Routed to the Right Support Path **Depending on the project, the right next step may be:** Trade quote Product spec package Technical support conversation Dealer referral Service request Parts request Commercial project review Inline’s goal is to route the request properly so builders and contractors do not lose time chasing the wrong contact path. ## Technical Documents When You Need Them Builders, contractors, architects, and specifiers can contact Inline directly for more detailed product documents, performance information, and certification details where applicable. Use this path when you need documents for quoting, project review, client approval, architectural coordination, or high-performance building requirements. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to a Specialist ](tel:1-866-566-5656) ## Common Questions for Builders and Contractors Find clear answers to common questions about fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What information should I include when requesting a trade quote? Include your project location, project type, rough timeline, product interest, window and door quantities if known, and any plans, drawings, photos, or measurements you already have. If you are unsure which product series fits the build, include that in your request. Inline can help guide the next step. Can Inline support custom window and door sizes? Inline offers standard and oversized products and can do any colour. Product-level size limits, finish names, minimums, lead-time impacts, and other configuration details should still be confirmed during quoting. What are the lead times? Lead times vary depending on the complexity of the project. Share your project timeline, product needs, options, and documentation requirements when you request a quote. Inline can then confirm current timing before the order moves forward. Can builders and contractors request product specs? Yes. Builders, contractors, architects, and specifiers can request product specs, drawings, performance information, and certification details where applicable. Does Inline supply both windows and doors? Yes. Inline offers fiberglass window systems, fiberglass entrance doors, and sliding patio doors. Product fit should be reviewed based on your project type, design requirements, and performance needs. Does Inline install windows and doors? Yes. Inline installs directly, has its own installers, and offers a turnkey replacement service that removes existing windows and installs new products tailored to the project. For projects outside confirmed direct service areas, confirm any regional dealer or contractor routing before promising installation. How does service or parts support work? For service or parts questions, use the service request path and include your contact details, project or order information if available, photos of the issue, and a short description of what you need. Are Inline products suitable for Passive House or high-performance projects? Yes, select Inline product series are documented for high-performance project needs. PHIUS scope currently includes 325 SER CSM/AWN/FXD, 400 SER, and 3000 SER TNT/FXD. PHI scope currently includes 3000 SER TNT/FXD. NFRC and AAMA apply across all products, and IGMAC glass units apply across the product line. Energy Star applies to all triple-glazed products and some double-glazed products. Confirm the exact product, configuration, certification details, and documentation with Inline before specifying. How do I get started? Start with a trade quote request or product question. Include the project details you already have, and Inline will help route you toward the right quote, spec, dealer, service, or technical support path. ## Need Help Confirming Product Fit? Send your plans, rough measurements, product interest, or project questions. Inline can help you understand the right fiberglass window or door path before the project moves too far. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Bring Inline Into the Project Early Share the project details you already have. If you have plans, drawings, photos, rough measurements, or product notes, include them so Inline can review the request more efficiently. Request a quote Newsletter First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Dealers Distributors](https://inlinefiberglass.com/solutions/dealers-distributors/) **Published:** June 9, 2026 **Author:** anthony@webhaven.ca **Content:** # Premium Fiberglass Windows and Doors for Serious Dealers A dealer partnership built on premium fiberglass products, technical credibility, responsive manufacturer support, and support throughout the sales process. [ Become a Dealer ](#form) [ Explore Products ](https://inlinefiberglass.com/products/) ## Become an Inline Fiberglass Dealer Inline Fiberglass manufactures premium fiberglass windows, entrance doors, sliding patio doors, and high-performance product options for residential, commercial, and architectural projects. Inline is accepting dealer inquiries from qualified window and door dealers, building product distributors, and showroom-based partners interested in carrying Inline products. Dealer opportunities are not exclusive at this time, and Inline does not currently sell in Quebec. [ Talk to a Specialist ](tel:1-866-566-5656) [ Become a Dealer ](#form) ## A Product Line Built Around Long-Term Performance Inline is not a general window company that happens to offer fiberglass. Fiberglass is the material Inline is built around. That focus gives dealers a clear product story: strong, durable, energy-efficient fiberglass windows and doors designed for customers who care about comfort, design, and long-term value. For dealers and distributors, Inline can support a premium product offering across several buyer types: - Homeowners upgrading windows and doors - Builders working on custom homes and renovations - Architects and specifiers looking for technical product confidence - Commercial and high-performance project teams - Customers looking for fiberglass instead of vinyl, aluminum, or wood alternatives [ Inquire About Dealer Opportunities ](https://inlinefiberglass.com/dealer-partnership-inquiry/) ## A Complete Fiberglass Product Portfolio Provide customers with premium fiberglass windows and doors backed by manufacturing expertise, technical documentation, and design flexibility. ## Fiberglass Windows for Homes Inline offers a range of fiberglass window systems for different project needs, including fixed, casement, awning, tilt and turn, slider, single hung, and double hung options. **Best for:** residential replacement, custom homes, commercial projects, energy-conscious buyers, and design-focused projects. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Fiberglass Entrance Doors Inline’s fiberglass entrance doors support curb appeal, durability, and energy performance for premium residential and project-based applications. **Best for:** front entries, custom homes, renovation upgrades, sidelites, transoms, and design-driven projects. [ Explore Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ## Fiberglass Sliding Patio Doors Inline sliding patio doors are built for larger openings, natural light, and smooth indoor-outdoor transitions. **Best for:** patios, modern homes, custom projects, high-performance projects, and selected commercial applications. [ Explore Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## High-Performance Options Select Inline products may support high-performance and Passive House project needs. Product suitability, certification details, and documentation should be confirmed with Inline. **Best for:** architects, builders, performance-led homeowners, and project teams that need technical product information. [ High-Performance Products ](https://inlinefiberglass.com/products/passive-house-high-performance/) ## Clear Support for Product Partners Inline’s dealer program should make it easier for qualified showroom-based partners to understand the product line, present it clearly, and connect customers with the right Inline products. Depending on the partnership fit, dealer support may include: - Product information and sales resources - Technical documents and specification support - Dealer training on Inline product offerings - Product samples and showroom displays - Dealer locator visibility for approved partners - Support for residential, commercial, and high-performance product inquiries - Clear communication around product fit and availability [ Submit a Dealer Inquiry ](#form) ## How the Dealer Inquiry Process Works Inline supports technical decision-making throughout the specification process. ## 01 — Tell Us About Your Business Submit your dealer inquiry with your company details, market area, product interest, and the type of customers you serve. ## 02 — Inline Reviews Market Fit The Inline team reviews your business, showroom presence, target market, and product interest. Inline is currently accepting new dealer inquiries and does not offer exclusive territories at this time. ## 03 — Discuss Product and Support Needs If there is a potential fit, Inline can discuss product offerings, technical documentation, training, samples or displays, dealer expectations, and next steps. ## 04 — Move Toward Onboarding Approved dealers can receive guidance on product resources, product training, display or sample availability, dealer locator listing, and how to represent Inline products accurately. ## Become an Inline Dealer or Distributor This page is for showroom-based companies that sell, distribute, specify, or support premium window and door products. Inline may be a fit for: - Window and door dealers with a showroom - Building product distributors with a showroom or display space - Window and door showrooms - Building envelope product suppliers - Companies serving residential, commercial, or high-performance building markets Inline may not be the right fit for every business or territory. Dealer opportunities depend on showroom presence, product alignment, market fit, and whether the business can properly represent Inline products. Inline does not currently sell in Quebec. [ Inquire About Dealer Opportunities ](https://inlinefiberglass.com/dealer-partnership-inquiry/) ## Helping Customers Find Authorized Inline Dealers Approved Inline dealers can be listed publicly in the dealer locator. This helps customers find the right contact for Inline product information in markets where an approved dealer is available. [ Find an Inline Dealer ](https://inlinefiberglass.com/dealers/) [ Become a Dealer ](https://inlinefiberglass.com/dealer-partnership-inquiry/) ## Common Questions About Becoming an Inline Fiberglass Dealer Find clear answers to common questions about Commercial fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Who can become an Inline dealer? Yes. Inline supports commercial, institutional, development, architectural, and high-performance project inquiries. The best next step is to share your project details so the team can help confirm product fit. What territories are available? Inline is currently accepting dealer inquiries and does not offer exclusive dealer territories at this time. Dealer opportunities are open broadly, but Inline does not currently sell in Quebec. Submit a dealer inquiry with your location and target market so Inline can review the fit. What products can dealers carry? Dealer product availability should be confirmed directly with Inline. The current client response does not provide a product-by-region availability matrix, except that Inline does not currently sell in Quebec. What support does Inline provide to dealers? Dealer support may include product information, technical documents, sales resources, product training, and product samples or showroom displays. Dealer-specific warranty or service routing should not be described unless Inline provides a defined process. How are customer inquiries handled? Customer inquiry routing should be confirmed directly with Inline during the dealer inquiry or onboarding process. The current client response does not provide a detailed dealer lead-routing policy. Can dealers be listed on the Inline website? Yes. Approved dealers can be listed publicly in Inline’s dealer locator. Listing details should be confirmed with Inline as part of the dealer review process. Does Inline offer exclusive dealer territories? No exclusive dealer territories are offered at this time. Dealers should confirm current territory details directly with Inline during the inquiry process. ## Interested in Carrying Inline Products? Tell us about your business, showroom, target market, and product interest. Inline will review your inquiry and contact you with the next step. [ Talk to a Specialist ](tel:1-866-566-5656) [ Become a Dealer ](https://inlinefiberglass.com/dealer-partnership-inquiry/) ## Explore a Dealer Partnership with Inline Tell us about your business and the market you serve. Inline will review your inquiry and contact you if there is a potential fit. Become a dealer Updates First Name Email Phone/Mobile Company Name Business location Territory / Market of Interest Products of Interest? Product Needed: - Select -DealerDistributorBuilderContractorShowroomOther Message I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Developers Commercial Projects](https://inlinefiberglass.com/solutions/developers-commercial-projects/) **Published:** June 9, 2026 **Author:** anthony@webhaven.ca **Content:** # Commercial Fiberglass Windows and Doors for Development Projects Inline Fiberglass supports developers, commercial project teams, architects, and builders with durable fiberglass window and door systems built for long-term performance, design flexibility, and technical project needs. [ Request a Quote ](#form) [ Learn more ](#details) ## Supporting Commercial Projects with Fiberglass Performance Commercial projects need more than a basic window supplier. They need product consistency, documentation, coordination, and confidence that the selected window and door systems fit the building’s performance and design goals. Inline Fiberglass manufactures fiberglass windows, entrance doors, sliding patio doors, and high-performance product options for residential, commercial, and architectural projects. Our team can help you review product fit, technical requirements, custom sizing, colour options, and next steps for your project. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request Project Support ](#form) ## Fiberglass Window and Door Systems for Commercial Builds Commercial fiberglass products are a strong fit for projects where durability, thermal performance, clean design, and long-term value matter. Inline products are used across commercial, institutional, multi-unit, custom residential, and high-performance buildings. Inline helps commercial teams evaluate fiberglass window and door options that support: - Large fixed window openings and clean sightlines - High-performance building envelope goals - Custom sizing and project-specific product selection - Durable finishes and colour coordination - Technical documentation for planning and specification - Coordination between teams and product specialists [ Talk to a Product Specialist ](tel:1-866-566-5656) ## Why Fiberglass Makes Sense for Commercial Projects Fiberglass is not a secondary product line for Inline. It is the material the company is built around. That focus matters on commercial projects where product reliability, dimensional stability, and long-term performance are important. ## Built for Long-Term Durability Fiberglass frames are designed to resist common performance issues associated with weaker materials. For commercial teams, that can help support long-term value and reduce product-related risk. ## Strong Thermal Performance Fiberglass helps reduce thermal transfer through the frame. Combined with the right glass package, it can support energy-efficient building goals and improve occupant comfort. ## Dimensional Stability Fiberglass expands and contracts at a rate closer to glass than many common frame materials. This helps support stable performance through seasonal temperature changes. ## Clean, Modern Design Options Inline offers fiberglass window and door systems that support contemporary design, larger glass areas, custom sizing, a wide range of finish options, and project-specific design requirements. ## Manufacturing Control Inline is a fully vertically integrated manufacturer. Its process includes pultrusion, painting, assembly, and QC, giving the team deeper control over product quality, finish, and consistency. ## Flexible for Requirements Fiberglass window and door systems can accommodate a range of sizes, configurations, glass packages, colours, and design objectives, helping teams align product selection with project goals. ## Product Options for Commercial and Development Projects Inline offers fiberglass window and door products that can support different commercial project needs. The right product path depends on the building type, design intent, operating requirements, performance targets, and installation plan. ![Inline Fiberglass 300 Series tilt-turn fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/300SERIESOPEN_vector-1920w-1024x1024.webp "300+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 300 Series Tilt & Turn Windows Designed for projects that need ventilation flexibility, airtightness support, and a premium operating style. Tilt and turn windows can support high-performance design while giving occupants practical ventilation options. **Best fit for:** high-performance buildings, multi-unit projects, custom commercial-residential designs, Passive House-oriented projects. [ View 300 Series ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) ![Inline Fiberglass 325 Series casement fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESOPEN_vector-1920w-1024x1024.webp "325+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 325 Series Casement, Awning & Fixed Windows A practical product family for commercial, residential, and custom building applications that need outward-opening or fixed fiberglass window options. **Best fit for:** mixed-use projects, light commercial buildings, custom builds, projects needing ventilation and strong weather performance. [ View 325 Series ](https://inlinefiberglass.com/products/fiberglass-windows/) ![Inline Fiberglass 400 Series strip fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/405SERIESB_vector-1920w-1024x1024.webp "405+SERIES+B_vector-1920w - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 400 Series Strip / Fixed Windows A strong option for commercial and architectural designs that need fixed glass, clean sightlines, and larger window compositions. This series is well suited for projects where daylight, durability, and thermal performance are priorities. **Best fit for:** commercial facades, institutional buildings, modern developments, large fixed openings, architectural glass layouts. [ View 400 Series ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 700 Series Casement / Hopper Windows Designed for applications where inward operation is preferred or required. This can be useful in urban, multi-level, and design-sensitive projects where exterior operation may not be practical. **Best fit for:** higher-level applications, urban projects, maintenance-conscious designs, buildings requiring inward operation. [ View 700 Series ](https://inlinefiberglass.com/products/fiberglass-windows/700-series-casement-hopper/) ![Inline Fiberglass 600 Series black sliding patio door.](https://inlinefiberglass.com/wp-content/uploads/2026/06/600-DOUBLE-DOOR-BLACK-1920w-03-1024x1024.webp "600-DOUBLE-DOOR-BLACK-1920w-03 - Inline Fiberglass - Inline Fiberglass") Doors ## 600 Series Sliding Patio Doors A high-performance sliding door option for projects that need large openings, access to outdoor areas, and strong thermal performance. Select configurations may support high-performance project goals. **Best fit for:** commercial-residential projects, amenity spaces, terraces, multi-unit developments, Passive House-oriented projects. [ View 600 Series ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## Confidence in your Commercial Projects Commercial buyers need proof before they commit. Inline supports project teams with product information, technical documents, performance data where available, and project examples that help developers and specifiers evaluate fit. Inline’s commercial experience includes projects such as TRCA Headquarters, OAA Headquarters Deep Energy Retrofit, Mosaïq, and Sifton Properties developments. **Commercial support and resources include:** - Commercial and institutional project experience - Fiberglass-only manufacturing focus - Product-specific performance documentation - Product-specific certification documentation, including PHIUS, PHI, NFRC, AAMA, Energy Star, and IGMAC where applicable - Technical support for architects, builders, and developers - Warranty and service information available for review [ View Commercial Projects ](#specs) ## Technical Documents for Better Commercial Decisions Developers and commercial project teams often need documentation before they can move forward. Inline can help provide product information and direct your team toward the right technical resources for your project. Documentation may include: - Product specifications with CAD files available upon request - Glass and performance information - Certification details where applicable - Warranty information and Product series guidance - High-performance project support [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## How Commercial Project Support Works Inline supports technical decision-making throughout the specification process. ## Step 01 — Send Project Details Share your project type, location, timeline, drawings or plans if available, and the product categories you are considering. ## Step 02 — Review Product Fit Inline’s team can help identify which fiberglass window or door systems may fit your design, performance goals, sizing needs, and project requirements. ## Step 03 — Coordinate Documentation Request specs, drawings, performance information, colour details, warranty information, and other documents needed for internal review or specification. ## Step 04 — Move Toward Quote or Consultation Once the product direction is clear, Inline can help guide the next step toward a quote, commercial inquiry, or project consultation. [ Start a Commercial Inquiry ](#form) ## Project Support for your Team Commercial projects often involve several decision-makers. Developers may be focused on value and risk. Architects may need product data and design flexibility. Builders may need clarity on order coordination, sizing, and documentation. Owners may care about long-term performance and maintenance. Inline’s role is to help your team move from product interest to clear next steps. - Product selection conversations - Commercial fiberglass window and door inquiries - Coordination with architects and builders - Custom sizing discussions / Colour and finish planning - Technical document requests - High-performance product review - Commercial project quote routing - Service and warranty information [ Book a Project Consultation ](#form) ## A Practical Fit for Commercial Projects Inline is not positioned as a generic window-wall or skyscraper facade company. The stronger and more accurate position is that Inline manufactures fiberglass window and door products that can support many commercial, institutional, development, and high-performance building needs. That distinction matters. It helps project teams understand where Inline can add value without making unsupported claims. Inline is a good fit when your project needs: - Fiberglass window and door systems - Strong product consistency and clean architectural designs - Long-term durability - Product documentation and custom sizing discussions - High-performance window or door options Ask If Inline Fits Your Project ## Common Questions About Commercial Fiberglass Window and Doors Find clear answers to common questions about Commercial fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Does Inline support commercial projects? Yes. Inline supports commercial, institutional, development, architectural, and high-performance project inquiries. The best next step is to share your project details so the team can help confirm product fit. What types of commercial projects are Inline products used for? Inline products may be considered for commercial buildings, institutional projects, multi-unit developments, custom builds, high-performance projects, and mixed-use applications. Fit depends on the product series, project goals, sizing, performance needs, and installation requirements. Are technical drawings and product documents available? Yes. Product information and technical documents are available for many Inline products, and CAD files are available upon request. Contact Inline to request the documents needed for your project, including specs, CAD files, performance information, or certification details where applicable. Are Inline products certified for Passive House or high-performance projects? Select Inline products have Passive House or high-performance certification documentation. PHIUS applies to 325 SER CSM/AWN/FXD, 400 SER, and 3000 SER TNT/FXD. PHI applies to 3000 SER TNT/FXD. Certification details should always be confirmed by product series and configuration before specification. Can Inline support custom sizes for commercial projects? Inline offers standard and oversized products and can review custom sizing needs for commercial projects. Product-level size limits were not provided, so final sizing should be confirmed by product series, configuration, and project requirements. Can Inline match commercial colour requirements? Inline can do any colour at a high level. Exact finish names, colour process, minimums, and lead-time impacts were not provided, so commercial colour requirements should still be reviewed with Inline during project planning. What is the lead time for commercial projects? Lead times vary depending on the complexity of the project. Contact Inline early in the planning process so the team can review the scope and provide project-specific guidance. Does Inline provide commercial warranties? Warranty details vary by product and project context. Inline can provide warranty information for review during the specification or quote process. Is there a minimum order for commercial projects? Inline does not have minimum order requirements. Share the project scope and product needs so the team can advise on the right product path. Who should contact Inline for a commercial project? Developers, architects, builders, construction managers, specifiers, and commercial buyers can contact Inline. If you are unsure who should lead the inquiry, start with a commercial project request and Inline can route the conversation. ## Planning a Commercial or Development Project? Send Inline your project details and let the team help you identify the right fiberglass window or door path. Whether you need product specs, commercial project support, custom sizing information, or a quote, Inline can help you take the next step with clarity. [ Commercial Support ](tel:1-866-566-5656) [ Talk to a Specialist ](tel:1-866-566-5656) ## Tell Us About Your Commercial or Development Project Tell us about your commercial project. Include your project type, location, timeline, product needs, and any drawings or plans you would like our team to review. Request a quote Notify First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Homeowners](https://inlinefiberglass.com/solutions/homeowners/) **Published:** June 2, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Windows and Doors for Homes Built to Perform Better, Last Longer Inline Fiberglass helps homeowners choose premium fiberglass windows, entrance doors, and sliding patio doors for renovations, replacements, custom homes, and high-performance residential projects. [ Request a Quote ](#form) [ Explore Products ](https://inlinefiberglass.com/products/) ## Your windows and doors affect how your home looks, feels, and performs every day. Whether you are replacing old windows, improving comfort, updating curb appeal, or planning a larger home project, our team can help you understand your options and take the next step toward the right quote. [ Request a Free Quote ](#form) [ Visit Inline Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Find the Right Fiberglass Windows or Doors for Your Home You do not need to know every product detail before reaching out. Start with the type of project you have, and Inline can help guide you from there. ## Fiberglass Windows for Homes Choose from fiberglass window styles suited for replacement projects, renovations, custom builds, and high-performance homes. **Good fit for:** - Replacing old or inefficient windows - Improving comfort and energy performance - Updating the look of your home - Adding durable, long-lasting window systems - Planning a custom residential project [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Fiberglass Entrance Doors Create a stronger first impression with fiberglass entrance doors built for durability, design flexibility, and everyday performance. **Good fit for:** - Front entry upgrades - Custom entrance designs - Better curb appeal - Energy-conscious door replacement - Sidelites, transoms, and design-focused entries [ Explore Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ## Fiberglass Sliding Patio Doors Open your home to more light, better views, and smooth access to outdoor spaces with fiberglass sliding patio doors. **Good fit for:** - Patio and backyard access - Large glass openings - Modern residential designs - Energy-conscious upgrades - High-performance home projects [ Explore Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## High-Performance Residential Options Explore fiberglass window and door options designed for energy-efficient residential projects. **Good fit for:** - Passive House and low-energy homes - Custom residential builds - Comfort-focused building envelopes - Advanced window and door performance [ High Performance Products ](https://inlinefiberglass.com/products/passive-house-high-performance/) ## Better Windows Start with a Better Frame Material Not all windows are built for long-term performance. Fiberglass is a strong, stable material that helps support comfort, durability, energy efficiency, and clean design. For homeowners, that means fewer compromises. ## Built for Comfort Old or poorly performing windows can make rooms feel cold, drafty, or uneven. Inline fiberglass windows are designed to help improve the comfort of your home with strong frames, efficient glass options, and product guidance. ## Built for Durability Fiberglass is valued because it is strong and dimensionally stable. That matters in Canadian weather, where windows and doors need to handle changing temperatures, moisture, strong winds, and daily use. ## Built for Energy Efficiency Energy-efficient windows for homes can help support better thermal performance and year-round comfort. Inline can help you review window and door options based on your home, goals, and product fit. ## Built for Design Flexibility Your windows and doors should work with the style of your home. Inline offers options for traditional, modern, and custom residential projects, with available choices for colours, glass, grilles, and hardware. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## How Your Window or Door Project Starts ## 01 — Tell Us About Your Project Start with a short quote request. Share your project location, product needs, timeline, and any details you already have. Photos, drawings, or measurements can help, but they are not required to start. ## 02 — We Help You Understand Your Options Inline reviews your project details and helps guide you toward the right fiberglass windows or doors. This may include product recommendations, showroom guidance, dealer routing, or next-step quote support depending on your location and project type. ## 03 — Product Selection and Quote Direction Once the project scope is clearer, the next step is product selection, sizing, options, and quote preparation. This is where details such as window style, glass package, colour, grilles, hardware, and door configuration can be reviewed. ## 04 — Manufacturing and Project Coordination Inline’s process has continued to center on manufacturing control. By keeping key parts of the process close to the company, Inline can better manage product quality, consistency, finish options, and technical support. This matters for homeowners who want confidence in what they are buying. It also matters for architects, builders, and commercial teams that need product information, documentation, and reliable guidance. ## 05 — Support After the Sale If service or parts support is needed, Inline should provide a clear path for service requests separate from new quote inquiries. [ Start a Quote Request ](#form) ## Premium Fiberglass Products Without the Guesswork Inline is not a generic window company selling every material type. Inline focuses on fiberglass windows and doors. That focus helps homeowners get clearer product guidance, stronger technical confidence, and window and door systems designed around the strengths of fiberglass. **What Homeowners Can Expect** - Clear guidance on fiberglass window and door options - Product recommendations based on your home and goals - Options for windows, entrance doors, and sliding patio doors - Support for comfort, durability, design, and energy performance - Showroom and project guidance where available - Dealer-supported routing where applicable - Service request path for existing product support ## See Inline Fiberglass Windows and Doors In Real Spaces Explore how Inline Fiberglass windows and Doors are used across homes and projects where ventilation, comfort, and clean architectural design are priorities. ## Choose Windows and Doors That Fit Your Style Performance matters, but your home still needs to look right. Inline fiberglass windows and doors can support a wide range of residential design goals, from traditional homes to clean modern builds. **Available option categories include:** - Various Window Options - Entrance door styles - Sliding door configurations - Interior and exterior colours - Glass packages - Grilles and divided lite options - Hardware choices - Custom project considerations [ Explore Customization Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) ## What Inline Homeowners Are Saying The installation team from Inline Fiberglass did a fantastic job. Slava and his team completed the installation to perfection and were professional, courteous, and efficient throughout the entire process. They were great to work with, took pride in their workmanship, and paid close attention to every detail. The finished result exceeded my expectations, and I would highly recommend them for any window project. Thanks again to the Inline Fiberglass team — job well done. jim moulitzi I recently purchased a patio door from Inline Fiberglass and was extremely pleased with the experience. A friend had previously purchased windows from Inline and spoke highly of both the products and the service, so I decided to give them a call. The quality of the door is excellent, and the staff were knowledgeable and helpful throughout the process. I was especially impressed with Thomas Hong’s experience and guidance. I would highly recommend Inline Fiberglass. Jim Malcolm We received exceptional service from the entire team. Dmitry provided honest, practical advice without the typical sales pitch. The installers—Slava, Joe, and Max—demonstrated excellent problem-solving skills when addressing my damaged siding and delivered high-quality results at a fair price. Their attention to detail with the flashing and sealing was exceptional, requiring no follow-up corrections. Overall, it was a top-tier experience. Damian Murawiecki We had a fantastic experience with Inline! Our sales representative, Samantha, was incredibly knowledgeable. The installation team, led by Slava and Igor, was efficient, professional and respectful of our property. They covered all surfaces, communicated progress and issues clearly, and left the space spotless. Now, all that’s left to do is paint the new trim! Overall, it was an extremely positive installation experience. The doors and hardware look amazing! Vera Rumyantseva [ View More Inline Reviews ](https://www.google.com/search?q=inline+fiberlgass+windows&sca_esv=bcc915fd4b92abab&sxsrf=ANbL-n4DWu3wLXo4wmEvGzE35QJvGpXdCQ%3A1781021312308&ei=gDooapvEEuC_ruEPrvH22Ak&biw=1728&bih=992&ved=0ahUKEwibhKG1xfqUAxXgnysGHa64HZsQ4dUDCBA&uact=5&oq=inline+fiberlgass+windows&gs_lp=Egxnd3Mtd2l6LXNlcnAiGWlubGluZSBmaWJlcmxnYXNzIHdpbmRvd3MyBxAAGIAEGA0yBxAAGIAEGA0yBxAAGIAEGA0yBhAAGB4YDTILEAAYgAQYigUYhgMyCxAAGIAEGIoFGIYDMggQABiJBRiiBDIIEAAYiQUYogQyCBAAGIAEGKIESO4NUOgGWLYMcAF4AZABAJgBeqABuwWqAQMyLjW4AQPIAQD4AQGYAgWgAosDwgIKEAAYRxjWBBiwA8ICDRAAGIAEGIoFGEMYsAPCAhcQLhjcBhi4BhjaBhjYAhjIAxiwA9gBAcICBxAjGLACGCeYAwDiAwUSATEgQIgGAZAGFLoGBggBEAEYGZIHAzMuMqAH_jyyBwMyLjK4B4UDwgcFMC4xLjTIBxKACAE&sclient=gws-wiz-serp#lrd=0x882b3985b8b54fdb:0xc3ecfea8b8e61d79,1,,,,) ## Common Questions About Windows and Doors for Homeowners Find clear answers to common questions about fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Are fiberglass windows good for homes? Yes. Fiberglass windows are a strong option for homeowners who care about comfort, durability, energy efficiency, and long-term performance. They are especially worth considering for replacement projects, custom homes, and high-performance residential builds. Do you offer window replacement in Toronto? Inline can help homeowners looking for window replacement in Toronto and surrounding areas understand the right product and quote path. Depending on your project and location, the next step may involve Inline, a showroom visit, an authorized dealer, or another project partner. Do you install directly? Installation details should be confirmed based on your location and project type. Some projects may involve dealers, builders, contractors, or other project partners. The best first step is to submit your project details so Inline can route you correctly. How much do fiberglass windows cost? Cost depends on window type, size, glass package, colour, grille options, hardware, project scope, and installation or coordination requirements. Requesting a quote is the best way to get accurate pricing for your home. Are Inline fiberglass windows energy efficient? Inline offers fiberglass window and door products designed for long-term performance and energy-conscious projects. The right product and glass package depends on your home, goals, and performance requirements. Can I choose custom colours? Inline offers colour and finish options for fiberglass windows and doors. Custom colour availability should be confirmed during the quote or product selection process. Can I visit a showroom? If you want to see products, finishes, or frame details in person, ask about showroom availability when you contact Inline. What information should I include in my quote request? Include your project location, product type, rough timeline, and a short description of what you need. Photos, plans, measurements, or inspiration images can also help the team understand your project faster. Do you offer fiberglass doors for homes? Yes. Inline offers fiberglass entrance doors and sliding patio doors for residential projects. These products can support comfort, durability, design flexibility, and energy-conscious home upgrades. ## Ready to Plan Your Home Window or Door Project? Tell us what you are working on. Inline will review your request and help you take the next step. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Tell Us About Your Home Window or Door Project Share as much as you can, and our team will help you understand the right next step. Request a quote Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Solutions](https://inlinefiberglass.com/solutions/) **Published:** June 2, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Window and Door Solutions for Every Project Path Explore solutions for homeowners, architects, builders, developers, commercial teams, dealers, and distributors. Each path connects you to the products, documents, support, and next steps that fit your project. [ Request a Quote ](#form) [ Find Your Solution ](#solutions) ## Choose the Path That Fits Your Project Not every visitor needs the same information. A homeowner may need help choosing a window style. An architect may need drawings and performance data. A builder may need product guidance and coordination. A dealer may need partnership details. Start with the path that best describes you. Homeowners ## Upgrade Your Home with Fiberglass Windows and Doors Planning a window or door upgrade? Inline Fiberglass can help you understand your product options, compare styles, and take the next step toward a quote. Explore fiberglass windows, entrance doors, sliding patio doors, colour options, glass packages, and high-performance products for residential projects. **Best for** Home renovations, custom homes, window replacement, door upgrades, energy-efficient improvements, and showroom inquiries. [ Explore Homeowner Solutions ](https://inlinefiberglass.com/solutions/homeowners/) Architects & Specifiers ## Specify with Clear Product Information Need technical confidence before specifying a window or door system? Inline supports architectural and high-performance projects with product information, technical documents, certification details where applicable, and project support. Use this path to access product data, drawings, performance resources, and spec-focused support. **Best for** Architectural specifications, Passive House and high-performance projects, product comparisons, technical documents, and commercial design support. [ Request Spec Support ](https://inlinefiberglass.com/resources/technical-spec-download/) For Builders and Contractors ## Build with Reliable Product Solutions Builders and contractors need products that fit the project, support efficient planning, and help keep construction moving forward. Explore fiberglass window and door options, customization possibilities, project requirements, and technical resources to help evaluate products, prepare quotes, and take the next step for residential and light commercial builds. **Best for** Custom builds, renovations, trade quotes, project coordination, product selection, and window or door package planning. [ Talk to a Product Specialist ](tel:1-866-566-5656) Developers & Commercial Buyers ## Get the Right Product Guidance for Your Project Commercial and multi-unit projects need more than a product list. They need technical clarity, project fit, long-term performance, and confidence in the manufacturer. Inline supports commercial and high-performance projects with fiberglass window and door products, project examples, technical resources, and coordinated inquiry support. **Best for** Commercial buildings, multi-unit developments, institutional projects, high-performance envelopes, and large project inquiries. [ Commercial Project Inquiry ](https://inlinefiberglass.com/services/commercial-fiberglass-window-systems/) Dealers & Distributors ## High-Performance Fiberglass for Commercial Builds Interested in carrying Inline products? Explore dealer opportunities, product categories, support resources, and partnership information. Learn about product availability, dealer support, market opportunities, and how to connect with the Inline team to discuss next steps. **Best for** Window and door dealers, distributors, regional product partners, and businesses interested in adding a premium fiberglass product line. [ Beccome a Dealer ](https://inlinefiberglass.com/dealer-partnership-inquiry/) ## The Right Information for the Right Buyer Inline Fiberglass serves more than one type of customer. That is why this page is built around project paths instead of forcing every visitor into the same quote form. Homeowners need plain-English product guidance. Architects and specifiers need technical data. Builders and contractors need reliable project communication. Commercial teams need documentation and proof. Dealers need a clear partnership path. This page helps each visitor move faster toward the right next step. [ View Product Pathways ](#pathways) ## Find the Right Fiberglass Product Path Inline’s product range supports residential, commercial, architectural, and high-performance applications. Use these product paths if you already know what you are looking for. ## Fiberglass Windows Durable, energy-efficient fiberglass window systems for homes, custom builds, commercial projects, and performance-focused designs. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Fiberglass Entrance Doors Explore entrance doors and sliding patio doors engineered for durability, comfort, design flexibility, smooth operation, and lasting performance. [ Explore Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) ## Passive House & High-Performance Product pathways for projects where thermal performance, airtightness, and documentation matter. Confirm certification details by product before specifying. [ View High-Performance Products ](https://inlinefiberglass.com/products/passive-house-high-performance/) ## Service Offerings Access product data, drawings, specification resources, and technical documents to support project planning, product evaluation, and design review. [ View Service Offerings ](https://inlinefiberglass.com/services/) ## Why Project Teams Choose Inline Fiberglass Inline Fiberglass is built around fiberglass windows and doors. That focus helps the team provide clearer product guidance, stronger technical support, and practical options for different project types. ## Fiberglass-Focused Product Knowledge Inline specializes in fiberglass windows and doors, helping keep product guidance focused, relevant, and aligned with project needs. ## Residential and Commercial Versatility Inline products are used across residential renovations, custom homes, commercial buildings, architectural projects, and dealer-supported markets. ## Product Solutions for Different Project Types A replacement project, custom build, Passive House design, and commercial application all have different requirements. Inline helps buyers navigate the right options. ## Technical Resources and Documentation Product data, drawings, specifications, and supporting technical resources are available to help with planning, review, and project development. ## Support for Homeowners and Industry Professionals Inline works with homeowners, builders, architects, developers, contractors, and dealers, providing guidance throughout the decision-making process. ## Clear Paths to the Right Next Step Whether you need a quote, product information, technical documentation, a showroom visit, or dealer support, Inline provides a clear path forward. ## A Clear Next Step for Every Project You do not need to know every product detail before reaching out. Tell us about your project, and our team will help you move in the right direction. ## 01 ## Choose Your Project Path Select the audience path that best describes your role and access the products, resources, and support most relevant to you. ## 02 ## Share the Right Project Details Tell Inline what you are planning, where the project is located, which products you are considering, and what stage the project is in. ## 03 ## Get Routed to the Right Next Step Connect with the right team for quotes, product information, technical resources, dealer support, or project guidance. [ Start a Quote Request ](https://inlinefiberglass.com/request-a-quote/) ## Not Sure Which Path Fits? Start with a quote request or product question. Inline’s team can review your project details and help route you to the right product, document, or contact path. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) [ Talk to a Specialist ](tel:1-866-566-5656) ## Common Questions About Inline Fiberglass Solutions Find clear answers to common questions about fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Which solution path should I choose? Choose the path that best matches your role. Homeowners should start with the homeowner path. Architects and specifiers should use the specifier path. Builders and contractors should use the trade path. Developers and commercial teams should use the commercial project path. Dealers and distributors should use the dealer path. Can homeowners contact Inline directly? Yes. Homeowners can request a quote, ask product questions, or book a showroom visit where available. If a dealer or local partner is the right next step for your area, Inline can help guide that process. Do architects and specifiers have access to product documents? Architects and specifiers can request product data, drawings, performance information, and certification details where applicable. Certification claims should always be confirmed by product and project requirement. Do builders and contractors get a different inquiry path? Yes. Builders and contractors often need product details, quote requirements, project coordination, and lead-time guidance. The builder and contractor path is designed to keep that process more focused. Does Inline support commercial projects? Inline supports commercial and high-performance project inquiries with product guidance, technical documentation, and project-specific review. Commercial teams should use the commercial project path or request project support. Are all Inline products Passive House or PHIUS certified? Do not assume every product has the same certification. Select products may support high-performance or Passive House project needs. Confirm the right product, certification details, and documentation with Inline before specifying. How do dealers and distributors contact Inline? Dealers and distributors should use the dealer inquiry path to share their business, market, territory interest, and product focus. What information should I provide when I contact Inline? Include your name, contact information, project location, customer type, product interest, project timeline, and a short description of what you need. If you have plans, drawings, photos, or rough measurements, include those if the form allows. ## Start with the Right Fiberglass Window or Door Path Tell Inline what kind of project you are planning. The team will help you move toward the right product, quote, technical document, dealer path, or project support conversation. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Warranty](https://inlinefiberglass.com/resources/warranty/) **Published:** June 14, 2026 **Author:** anthony@webhaven.ca **Content:** # Inline Fiberglass Warranty Learn what is covered under Inline’s warranty program and where to find warranty details. [ Read More ](#article) ## Warranty Support for Inline Fiberglass Windows and Doors Inline Fiberglass windows and doors are built for long-term performance, comfort, and durability. Our warranty resources are here to help homeowners, builders, dealers, architects, and commercial project teams understand the coverage that may apply to their products and the right way to request support. Use this page to download available warranty documents, review the correct service path, and submit a warranty or service request if your project needs assistance. [ Download Warranty Documents ](#warranty-downloads) [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) ## Warranty Documents and Product Support Every window or door project is different. Warranty coverage may depend on the product type, project details, purchase date, installation conditions, and the applicable warranty document. To make the process easier, start by reviewing the warranty document that matches your product or project type. **Available Warranty Resources:** ## Fiberglass Window Warranty Review warranty information for eligible Inline Fiberglass window products, including coverage details, owner responsibilities, and claim requirements. ## Fiberglass Door Warranty Review warranty information for Inline Fiberglass entrance doors, sliding patio doors, and applicable door systems. ## Transfer Warranty Information If ownership of a property has changed, review the transfer warranty requirements and confirm whether the warranty may be transferred. ## Commercial Project Warranty Support Commercial, multi-unit, architectural, and builder-led projects may have specific warranties. Contact Inline for the warranty documents that apply to your order. [ Download Warranty PDFs ](#warranty-downloads) ## What Warranty Coverage May Include Depending on the product and project, coverage may relate to items such as product materials, manufacturing details, insulating glass units, finishes, hardware, or other defined components. Warranty coverage is not the same as general service, maintenance, installation correction, or damage caused after delivery. The warranty document for your product should always be treated as the source of truth. For the most accurate answer, please review the applicable warranty PDF before submitting a claim. **Important Warranty Notes** Warranty coverage may vary by product, order, project type, and installation conditions. Some claims may need to be handled through the dealer, builder, contractor, or project team that supplied or installed the product. Commercial or large-scale projects may require separate documentation or project-specific review. Photos, order information, and product details help Inline route your request faster. ## How to Start a Warranty Claim The fastest way to get help is to send your request to the right place from the beginning. ## 1. Contact Your Dealer, Builder, or Installer First If your Inline Fiberglass windows or doors were purchased through a dealer, builder, contractor, or installation company, contact them first. They may already have the order information, installation details, and service history needed to review the issue. This is especially important if the concern may involve installation, site conditions, adjustment, handling, or post-installation service. [ Find a Dealer ](https://inlinefiberglass.com/dealers/) ## 2. Gather Your Product and Project Information Before submitting a warranty or service request, collect as much information as possible. **Helpful details include:** Your name and contact information, Project address or product location, Dealer, builder, contractor, or installer name, if applicable, Approximate purchase or installation date, Product type, such as fiberglass windows, entrance doors, or sliding patio doors, Photos of the full product and close-up photos of the concern, A short description of the issue, Any available order number, invoice, warranty document, or project reference. ## 3. Submit a Service Request to Inline If you are unsure who to contact, or if your dealer or project team has directed you to Inline, use the service request form. Our team will review your details and help route the request to the appropriate next step. [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) ## Download Our Warranty Documents Looking to download any of our warranty documents? Use the list of links below to download PDF versions of each. ### Inline Fiberglass Warranty (PDF) Review warranty coverage, terms, and product support information for Inline fiberglass windows and doors. [**Inline Fiberglass Warranty (PDF) >**](https://inlinefiberglass.com/wp-content/uploads/2026/07/newinlinewarranty-86151f9d.pdf) ### Transfer of Warranty (PDF) Download the transfer form and instructions for transferring warranty coverage to a subsequent property owner. [**Transfer of Warranty (PDF) >**](https://inlinefiberglass.com/wp-content/uploads/2026/07/inline_transfer_of_warranty.pdf) ### Residential Entrance Door Warranty (PDF) View warranty coverage, limitations, and care information for Inline residential entrance door systems. [**Residential Entrance Door Warranty (PDF) >**](https://inlinefiberglass.com/wp-content/uploads/2026/07/doorwarranty.pdf) ## Warranty and Service Routing Different types of requests need different support paths. Use the guide below to choose the right next step. ## Homeowners If your windows or doors were supplied through a dealer, builder, or installer, contact that company first. If you need help identifying the right next step, submit a service request with your product details and photos. [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) ## Dealers and Distributors For customer warranty questions, service coordination, or parts-related support, contact Inline with the product details, original order information, and photos of the concern. [ Contact Dealer Support ](https://inlinefiberglass.com/contact/) ## Builders and Contractors If the request relates to an active or recently completed project, include the project name, location, product type, installation stage, and any relevant site photos. [ Request Project Support ](tel:1-866-566-5656) ## Architects, Developers, and Commercial Project Teams For commercial or multi-unit projects, warranty review may depend on project-specific documentation. Please include the project name, product series, project location, and the original project contact if available. [ Contact Commercial Support ](https://inlinefiberglass.com/contact/) ## Need Parts or Service? Not every issue is a warranty claim. Some requests may involve adjustment, replacement parts, maintenance guidance, or service review. **Use the service form if you need help with:** Window or door operation, Hardware questions, Replacement part inquiries, Glass or seal concerns, Finish or coating questions, Dealer or project routing, Warranty claim review. Submitting clear photos and project information helps reduce back-and-forth and makes it easier for the team to review your request. [ Submit a Request ](https://inlinefiberglass.com/services/service-parts-requests/) ## Why Warranty Clarity Matters Windows and doors are long-term building products. A clear warranty process helps protect homeowners, builders, dealers, and commercial teams from confusion when support is needed. Inline Fiberglass is focused on premium fiberglass windows and doors for residential, commercial, and high-performance projects. The warranty page should help visitors know what to download, who to contact, and what information to provide before they submit a claim. For buyers still comparing products, warranty information can also help reduce risk before requesting a quote. ## Common Questions About Inline Warranties Find clear answers to common questions about Inline fiberglass warranties. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What warranty applies to Inline Fiberglass windows? Warranty coverage depends on the product, order, purchase date, installation conditions, and applicable warranty document. Start by downloading the fiberglass window warranty PDF and reviewing the coverage details. If you still need help, submit a service request with photos and project information. What warranty applies to Inline Fiberglass doors? Door warranty coverage may vary by door type, configuration, and project details. Review the applicable fiberglass door warranty document first, then contact your dealer, builder, or Inline if you need support. Is the Inline Fiberglass warranty transferable? Warranty transfer rules depend on the applicable warranty document. Review the transfer warranty information and follow the listed requirements. If ownership has changed and you are unsure what applies, submit a request with the property address, product details, and any available documents. Who should I contact first for a window warranty claim? If your product was purchased through a dealer, builder, contractor, or installer, contact them first. They may have the original order details and can help determine whether the issue should be handled through service, installation review, parts support, or warranty review. What information should I include with a warranty claim? Include your name, contact details, project location, product type, approximate purchase or installation date, dealer or installer name if applicable, a description of the issue, and clear photos. If you have an order number, invoice, or warranty document, include that too. Do I need photos to submit a warranty claim? Photos are strongly recommended. Include one photo showing the full window or door and additional close-up photos showing the concern. Clear photos help the team understand the issue and route the request more efficiently. Are commercial warranties handled differently? Commercial, multi-unit, architectural, and builder-led projects may have project-specific warranty documents or review steps. Commercial teams should include the project name, project location, product details, and original project contact when requesting support. Is every service issue covered by warranty? Photos are strongly recommended. Include one photo showing the full window or door and additional close-up photos showing the concern. Clear photos help the team understand the issue and route the request more efficiently. Can I submit a claim directly to Inline? Yes, but if your product was supplied through a dealer, builder, or installer, it is usually best to start with that contact first. If you are unsure, submit a service request and Inline will help route the request. Where can I download warranty documents? Warranty PDFs should be available on this page. Use the download buttons near the top of the page or contact Inline if you cannot find the correct document for your product. ## Ready to Request Warranty or Service Support? Send us the details of your warranty, service, or parts request. The more information you provide, the easier it is for our team to review your request and guide you to the right next step. [ View Warranty Documents ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) --- ### [Passive House](https://inlinefiberglass.com/projects/passive-house/) **Published:** June 11, 2026 **Author:** anthony@webhaven.ca **Content:** # Passive House Window Projects Built Around Performance Passive House and high-performance buildings demand more from every part of the envelope — including the windows and doors. [ Start Your Project ](#form) [ View Our Projects ](#gallery) ## Explore Passive House and high-performance projects Inline Fiberglass supports performance-focused residential, commercial, and architectural projects with fiberglass window and door systems designed for comfort, durability, thermal performance, and long-term dimensional stability. A Passive House project is not just about choosing efficient products. It is about making sure every building component works together to support airtightness, comfort, insulation, and reduced energy demand. That is why project proof matters. [ View Our Projects ](#gallery) [ Start Your Project ](#form) ## Real Project Proof for High-Performance Building Goals Inline Fiberglass products have been used in projects where performance, durability, and design flexibility are all part of the brief. These projects help architects, builders, developers, and homeowners see how fiberglass windows and doors can support demanding building-envelope goals. [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-29.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-25.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-28.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-27.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-26.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-24.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-23.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-15.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-16.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-17.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-18.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-19.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-20.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-21.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-22.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-14.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-13.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-12.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-09.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-08.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-07.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-06.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-05.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-04.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-03.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-02.jpg) ## Fiberglass Windows and Doors for Demanding Building Envelopes Passive House projects place pressure on product selection. Windows and doors need to support the thermal envelope, minimize weak points, and help the project team make informed specification decisions. Inline Fiberglass is built around fiberglass. That focus helps the team support stronger product guidance, durable window and door systems, and practical technical support for performance-focused projects. [ Request Project Support ](#form) ## Tested and Confirmed to Perform Our windows and doors meet the rigorous standards of Passive House , Phius & Energy Star certification, ensuring superior energy efficiency and comfort in your home. Designed to minimize energy consumption, they provide a sustainable solution for modern living. ![Logo for Passive House Institute: a red stylized P with a yellow abstract shape and the words Passive House Institute.](https://inlinefiberglass.com/wp-content/uploads/2026/07/Passive-house-institute-log-01.jpg "Passive-house-institute-log-01 - Inline Fiberglass - Inline Fiberglass") ## Passive House Certification Our windows and doors are Energy Star certified, ensuring they meet strict energy efficiency guidelines set by the EPA. This certification helps you save on energy bills while contributing to a healthier environment. [ View Details ](https://database.passivehouse.com/en/components/manufacturer/inline-fiberglass-ltd/) ![Phius logo: turquoise circular emblem on the left and the word 'phius' in gray lowercase on the right.](https://inlinefiberglass.com/wp-content/uploads/2026/07/phius-logo-01.jpg "phius-logo-01 - Inline Fiberglass - Inline Fiberglass") ## PHIUS Certification Inline Fiberglass products are certified by PHIUS, guaranteeing that they adhere to the highest performance standards for energy efficiency. This certification reflects our commitment to sustainable building practices and quality craftsmanship. [ View Details ](https://www.phius.org/window-database?_page=1&keywords=inline&_limit=20) ![Energy Star certification logo on blue background, featuring a white star and the word 'Energy' in script above 'ENERGY STAR'.](https://inlinefiberglass.com/wp-content/uploads/2026/07/energy-star-logo-01.jpg "energy-star-logo-01 - Inline Fiberglass - Inline Fiberglass") ## Energy Star Certification Our windows and doors are Energy Star certified, ensuring they meet strict energy efficiency guidelines set by the EPA. This certification helps you save on energy bills while contributing to a healthier environment. [ View Details ](https://natural-resources.canada.ca/energy-efficiency/energy-star/windows-doors-skylights-manufacturers-energy-star-canada-participants) ## Key Advantages for Passive House and High-Performance Projects Inline fiberglass window and door systems can support projects focused on energy efficiency, airtightness, occupant comfort, and long-term building performance. ### Thermal Performance Support Fiberglass frames help support energy-efficient building goals by reducing the thermal weakness often associated with more conductive frame materials. ### Dimensional Stability Fiberglass is valued for its stability across changing temperatures. That matters in projects where long-term seal performance is a priority. ### Triple Glazing Pathways Many projects require advanced glass packages. Inline can help project teams review appropriate product and glazing options based on project requirements. ### Product Documentation Architects, builders, and developers can request product specs, drawings, performance data, and certification details to confirm product fit before specifying. ### Project Versatility Inline products can support homeowners, custom builders, architects, and commercial teams working on performance-led projects. ### Performance-Focused Design Inline products can be considered for projects pursuing improved comfort, reduced energy demand, and higher-performing building envelopes. ## Product Pathways for Passive House and High-Performance Projects The right product depends on the project type, opening size, operation, glass package, climate, and certification requirements. Inline can help confirm the right fit. ## 400 Series Fixed / Strip Windows A strong fit for modern designs, larger fixed glass areas, and projects where clean sightlines and high-performance glazing are priorities. [ 400 Series Fixed Windows ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) ## 325 Series Casement, Awning & Fixed Windows Useful for projects that need operable ventilation, durable fiberglass frames, and strong performance in residential or light commercial applications. [ Explore 325 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## 300 Series Tilt & Turn Windows A performance-focused option for projects that need flexible operation, secure ventilation, and a European-style tilt-and-turn function. [ 300 Series Tilt & Turn Windows ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) ## 600 Series Sliding Patio Doors A sliding door pathway for projects that need large openings, natural light, and improved thermal performance compared with ordinary patio door systems. [ 600 Series Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## Need Confirmed Certification Details? Certification scope can vary by product, configuration, glass package, and project requirement. Request current product documentation before specifying. The CRO strategy also recommends verifying exact certification scope before using broad Passive House, PHIUS, or Energy Star claims. [ Request Certified Product Data ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Support for Architects, Builders, Developers, and Homeowners Passive House projects usually involve more questions than a standard window or door replacement. Inline helps project teams review the practical details before moving forward. Inline can help with: - Product selection - Performance and certification documentation - Glass and configuration review - Custom sizing questions - Technical document requests - Project coordination and Quote support [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to a Specialist ](tel:1-866-566-5656) ## How to Start Your Passive House Window Project You do not need to know the exact product series before contacting Inline. Start with the basics and the team can help guide the next step. ## Step 01 — Tell us about the project Share the project type, location, drawings if available, product needs, timeline, and performance goals. ## Step 02 — We review the product pathway Inline helps identify which fiberglass window or door systems may fit the project requirements. ## Step 03 — Confirm specs and next steps Inline can provide product information, certification details where applicable, and quote or spec support for the next stage of planning. [ Start a Project Inquiry ](#form) ## Planning a Passive House or High-Performance Project? Tell us about your project and our team will help you review the right fiberglass window or door pathway. Request product specs, confirm certification details, or start a quote conversation with Inline Fiberglass. [ Request Project Support ](tel:1-866-566-5656) [ Talk with a Specialist ](tel:1-866-566-5656) ## Common Questions About Passive House Projects Find clear answers to common questions about fiberglass windows and doors for Passive House Projects, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Can Inline Fiberglass support Passive House projects? Yes. Inline can support Passive House and high-performance projects by helping project teams review product options, specs, documentation, and certification details. The right product depends on the project requirements and final configuration. Are all Inline products Passive House or PHIUS certified? No broad claim should be made without checking the current product documentation. Certification can depend on the product series, configuration, glass package, and applicable standard. Contact Inline to confirm the correct documentation for your project. Which products should I consider for a Passive House project? Common pathways may include high-performance fixed windows, operable fiberglass windows, and sliding door systems, depending on the project. Inline can help confirm which series best fits the opening type, performance target, and design intent. Can Inline provide technical documents for architects and builders? Yes. Architects, builders, and developers can request product specs, drawings, performance data, and certification details to support specification decisions. Do Passive House projects require triple glazing? Many high-performance and Passive House projects use advanced glazing packages, including triple glazing, but the right specification depends on the project goals, climate, orientation, and performance requirements. Can homeowners request Passive House windows? Yes. Homeowners planning a custom home, deep energy retrofit, or high-performance renovation can contact Inline for guidance on suitable fiberglass window and door options. Can Inline support commercial Passive House or high-performance projects? Yes. Inline supports commercial and high-performance projects with fiberglass window and door products backed by technical documentation and project experience. Project teams should request spec support early so the right product pathway can be reviewed. ## Tell Us About Your Passive House or High-Performance Project? Our team will review your request and help you confirm the right product path, documentation, and next step. Request a quote Updates First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Passive House High Performance](https://inlinefiberglass.com/products/passive-house-high-performance/) **Published:** June 9, 2026 **Author:** anthony@webhaven.ca **Content:** # Passive House & High-Performance Fiberglass Products Inline Fiberglass builds fiberglass windows and doors for projects where thermal performance, durability, comfort, and technical documentation matter. [ Request a Quote ](#form) [ Learn More ](#details) ## Built for Projects Where Performance Is Not Optional Passive House and high-performance buildings place more demand on windows and doors than standard projects. Frames, glass packages, spacers, air-tightness, installation details, and product selection all affect the final result. Inline Fiberglass supports performance-focused projects with fiberglass window and door systems designed for long-term stability, thermal comfort, and clean architectural design. This page helps you understand which Inline products may fit your project, what documentation to request, and how to connect with the right technical support before specifying or ordering. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request a Free Quote ](#form) ## Tested and Confirmed to Perform Our windows and doors meet the rigorous standards of Passive House , Phius & Energy Star certification, ensuring superior energy efficiency and comfort in your home. Designed to minimize energy consumption, they provide a sustainable solution for modern living. ![Logo for Passive House Institute: a red stylized P with a yellow abstract shape and the words Passive House Institute.](https://inlinefiberglass.com/wp-content/uploads/2026/07/Passive-house-institute-log-01.jpg "Passive-house-institute-log-01 - Inline Fiberglass - Inline Fiberglass") ## Passive House Certification Our windows and doors are Energy Star certified, ensuring they meet strict energy efficiency guidelines set by the EPA. This certification helps you save on energy bills while contributing to a healthier environment. [ View Details ](https://database.passivehouse.com/en/components/manufacturer/inline-fiberglass-ltd/) ![Phius logo: turquoise circular emblem on the left and the word 'phius' in gray lowercase on the right.](https://inlinefiberglass.com/wp-content/uploads/2026/07/phius-logo-01.jpg "phius-logo-01 - Inline Fiberglass - Inline Fiberglass") ## PHIUS Certification Inline Fiberglass products are certified by PHIUS, guaranteeing that they adhere to the highest performance standards for energy efficiency. This certification reflects our commitment to sustainable building practices and quality craftsmanship. [ View Details ](https://www.phius.org/window-database?_page=1&keywords=inline&_limit=20) ![Energy Star certification logo on blue background, featuring a white star and the word 'Energy' in script above 'ENERGY STAR'.](https://inlinefiberglass.com/wp-content/uploads/2026/07/energy-star-logo-01.jpg "energy-star-logo-01 - Inline Fiberglass - Inline Fiberglass") ## Energy Star Certification Our windows and doors are Energy Star certified, ensuring they meet strict energy efficiency guidelines set by the EPA. This certification helps you save on energy bills while contributing to a healthier environment. [ View Details ](https://natural-resources.canada.ca/energy-efficiency/energy-star/windows-doors-skylights-manufacturers-energy-star-canada-participants) ## 400 Series Fixed / Strip Windows For architectural projects that need large fixed openings, clean sightlines, and strong thermal performance, the 400 Series Fixed / Strip window pathway should be reviewed early in the specification process. **Best suited for:** Large fixed glass areas, commercial projects, modern homes, Passive House and high-performance designs, and projects where fixed units carry much of the building envelope strategy. [ Download 400 Series Specs ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/#product-specs) ## 600 Series Sliding Patio Doors The 600 Series Sliding Patio Door supports high-performance projects that need large glass openings, outdoor access, and Energy Star Most Efficient performance when specified with triple glazing. **Best suited for:** Patios, terraces, modern homes, custom builds, high-performance residential projects, and energy-conscious door applications where the correct glazing and performance documents are confirmed. [ Download 600 Series Door Specs ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/#product-specs) ## Other Fiberglass Window Systems Inline also offers fiberglass window systems for different design and operating needs. For this page, promote PHIUS-certified 325 Series casement/awning/fixed, 400 Series, and 3000 Series tilt & turn/fixed first. For Passive House or high-performance work, the correct product should be reviewed against the project’s performance targets before being selected. [ Compare Product Options ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## Certifications, Testing & Performance Documentation Explore the certifications, testing programs, and technical resources that support Inline fiberglass windows and doors. ## Phius / Passive House PHIUS-certified product pathways include 325 Series casement, awning, fixed, 400 Series, and 3000 Series tilt & turn/fixed. ## NFRC Performance All Inline products have current NFRC listings. Thermal and optical performance information can support product comparison and specification decisions. ## AAMA Testing All Inline products have current AAMA ratings that support structural and operational confidence. ## Energy Star 325, 400, 600, and 3000 Series products reach Energy Star Most Efficient when specified with triple glazing. ## IGMAC-Certified Glass All Inline products use IGMAC-certified glass units, supporting long-term glass performance and moisture resistance. ## EPD & Sustainability Inline has Environmental Product Declaration documentation available for sustainability-focused projects and specification teams. ## How Inline Supports Passive House and High-Performance Projects High-performance projects need more than a product brochure. They need the right product path, the right glass package, and the right documentation. Inline can support project teams with: ## Product Selection Guidance Help reviewing which fiberglass window or door series may fit the project’s performance, design, and operating needs. ## Performance Documentation Access to available product data, certification references, NFRC data, technical documents, and related resources. ## Select Glass Package Options Guidance on double-pane, triple-pane, Low-E, spacer, gas-fill, and other glass package considerations where applicable. ## Architect and Builder Support Support for specifiers, builders, and project teams that need technical clarity before quoting, specifying, or ordering. ## High-Performance Project Fit High-Performance Project Fit Support for Passive House, PHIUS, energy-efficient, custom residential, and commercial project needs. ## Project-Specific Configuration Support Assistance reviewing options and product combinations to help align performance goals with project requirements. ## Why Fiberglass Works for High-Performance Buildings Fiberglass is a strong fit for performance-focused window and door systems because it supports: ## Thermal Performance Fiberglass helps reduce frame-related heat transfer compared with more conductive materials. ## Dimensional Stability Fiberglass expands and contracts at a rate closer to glass, helping support long-term seal and frame stability. ## Strength for Larger Openings The strength of fiberglass can support larger glass areas and clean sightlines without relying on bulky frame profiles. ## Lasting Durability Fiberglass is built for long-term performance across changing temperatures and demanding buildings. ## Design Flexibility Inline fiberglass products can support residential, commercial, modern, and traditional design goals. ## Energy-Efficient Compatibility Supports advanced double- and triple-pane glass packages for improved comfort and energy performance. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Common Project Applications **Passive House Homes** For homeowners, architects, and builders targeting high levels of energy efficiency and comfort. **Custom Residential Projects** For new builds and major renovations where windows and doors are part of the performance strategy. **Commercial and Institutional Buildings** For project teams that need durable fiberglass fenestration and technical documentation. **Energy-Efficient Renovations** For homeowners upgrading older windows and doors with long-term comfort and durability in mind. **Large Glass Openings** For designs that require stronger frame material, larger openings, and improved thermal control. ## Common Questions About Passive House & High-Performance Products Find clear answers to common questions about Passive House & High-Performance Products , including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Which Inline products are PHIUS or Passive House certified? PHIUS-certified product pathways include 325 Series casement/awning/fixed, 400 Series, and 3000 Series tilt & turn/fixed. The 3000 Series tilt & turn/fixed is also confirmed as PHI certified. Are all Inline windows Passive House certified? No. The confirmed PHIUS-certified product pathways are 325 Series casement/awning/fixed, 400 Series, and 3000 Series tilt & turn/fixed. The 3000 Series tilt & turn/fixed is also PHI certified. Do Inline products qualify for Energy Star? Energy Star applies to all triple-glazed Inline products and some double-glazed products. Inline confirms that 325, 400, 600, and 3000 Series products reach Energy Star Most Efficient when specified with triple glazing. Can Inline support Passive House window specifications? Yes. Inline can support Passive House and high-performance projects with product guidance, technical documents, performance data, and spec support. Project teams should submit the project type, location, product interest, and performance requirements. Do you provide drawings and technical documents? Inline can provide available product specs, drawings, performance documents, certification references, and related technical resources upon request. Can homeowners buy Passive House windows? Inline can provide available product specs, drawings, performance documents, certification references, and related technical resources upon request. What makes fiberglass useful for high-performance windows? Fiberglass supports strength, dimensional stability, thermal performance, durability, and clean design. That makes it a strong material choice for projects where the window or door system has to support long-term envelope performance. Do Passive House windows cost more than standard windows? High-performance products often involve more advanced glass packages, tighter performance requirements, and more technical coordination. Inline should provide project-specific quotes instead of publishing broad pricing claims. Can Inline help with commercial high-performance projects? Yes. Inline supports residential, commercial, architectural, and high-performance project needs. Commercial teams should request product data, project support, and technical review early in planning. ## Planning a PHIUS, Passive House, or High-Performance Project? Get the product information you need before you specify, quote, or order. Inline can help you review PHIUS-certified product pathways, Energy Star configurations, public technical downloads, EPD resources, and high-performance fiberglass window and door options for your project. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Tell Us About Your Passive House, or High-Performance Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Subscribe First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Fiberglass Doors](https://inlinefiberglass.com/products/fiberglass-doors/) **Published:** June 8, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Doors Built for, Comfort, Performance, and Clean Design Inline Fiberglass offers premium fiberglass doors for homes, custom builds, commercial projects, and high-performance building needs. [ Request a Quote ](#form) [ Learn More ](#more) ## Fiberglass Doors for Entryways, Patios, and Everyday Living Choose from 4500 Series fiberglass entrance doors and 600 Series sliding patio doors, each designed to support long-term durability, energy efficiency, smooth operation, and design flexibility. Whether you are replacing an entry door, planning a patio opening, or specifying doors for a performance-focused project, our team can help you choose the right product path and request a free quote. [ View Products ](#products) [ Request a Free Quote ](#form) ## Fiberglass Door Options from Inline Inline products are built for projects where strength, thermal performance, and design matter. ![Inline Fiberglass 4500 Series black fiberglass double entrance door.](https://inlinefiberglass.com/wp-content/uploads/2026/05/4500-DOUBLE-DOOR-BLACK-1920w-02-1024x1024.webp "4500-DOUBLE-DOOR-BLACK-1920w-02 - Inline Fiberglass - Inline Fiberglass") ## 4500 Series Entrance Doors The 4500 Series is a premium fiberglass entrance door system designed for front entries, custom homes, renovations, and projects where architectural appearance matters. It is a strong fit for homeowners looking to upgrade curb appeal, create a more distinctive entrance, or incorporate sidelites and transoms into the overall design. With durable fiberglass construction and a wide range of design possibilities, the 4500 Series helps balance long-term performance with the visual impact expected from a front entry door. **Key benefits:** - Fiberglass construction for long-term stability - Clean entry-door design options - Modern custom homes - Custom colour capability, with final finish details confirmed during quoting - NFRC performance information available - Suitable for residential and select light commercial applications [ Explore 4500 Series Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ![Inline Fiberglass 600 Series black sliding patio door.](https://inlinefiberglass.com/wp-content/uploads/2026/06/600-DOUBLE-DOOR-BLACK-1920w-03-1024x1024.webp "600-DOUBLE-DOOR-BLACK-1920w-03 - Inline Fiberglass - Inline Fiberglass") ## 600 Series Sliding Patio Doors The 600 Series is a high-performance fiberglass sliding patio door system designed for projects that need large glass areas, smooth operation, and a strong connection between indoor and outdoor spaces. It is well suited for patio and backyard access, decks, balconies, modern residential designs, and high-performance homes where natural light and expansive views are a priority. A practical choice for builders, architects, and commercial specifiers seeking durable fiberglass construction, energy-efficient glazing options, and a clean architectural appearance. **Key benefits:** - Smooth sliding operation - Strong fiberglass framing - Commercial spaces - Double and triple-pane glass, with Energy Star Most Efficient applying to the 600 Series with triple glazing - Standard and oversized configurations available - Product documentation available [ Explore 600 Series Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## Why Choose Fiberglass Doors? Fiberglass is a smart material for doors because it supports strength, stability, and thermal performance without the same drawbacks buyers often associate with wood, vinyl, or metal doors. ### Built for Performance Fiberglass doors are designed for projects where day-to-day comfort and long-term durability matter. They can help support better thermal performance, reliable operation, and a clean finished look. ### Designed for Comfort A door is part of the building envelope. The right door system can help reduce drafts, support indoor comfort, and improve the way a home or building feels throughout the year. ### Flexible Configurations Choose from entrance doors and sliding patio doors with standard and oversized options, custom colour capability, and project-specific configurations confirmed during quoting. [ Request a Free Quote ](#form) [ Talk to a Specialist ](tel:1-866-566-5656) ## Door Options for Homes, Builders, and High-Performance Projects Inline fiberglass doors can support several project types: ## For Homeowners Upgrade your entry or patio door with a fiberglass system designed for comfort, durability, and cleaner design. Our team can help you understand the difference between entrance doors and sliding patio doors, then guide you toward the right next step. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## For Architects & Specifiers Planning a residential, commercial, or energy-efficient project? Request product details, drawings, documentation, Energy Star details, and confirmation of certification scope for the exact door system being considered. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## For Builders and Contractors Get clear product guidance for door selection, project quoting, and coordination. Share your project details and our team will help confirm the right Inline door path. [ Talk to a Specialist ](tel:1-866-566-5656) ## Performance and Certification Support Inline has NFRC and AAMA documentation across products. For the 600 Series sliding patio door is certified Energy Star Most Efficient and applies with triple glazing. For commercial, architectural, or energy-efficiency requirements, request the latest product documentation so the right door, glass package, and certification details can be reviewed for your project. [ Request Certified Product Data ](https://inlinefiberglass.com/resources/technical-spec-download/) ## A Simpler Way to Start Your Door Project You do not need to know every product detail before reaching out. Tell us about your project, and our team will help you move in the right direction. ## 01 ## Tell Us About Your Project Share whether you need an entrance door, sliding patio door, or help choosing the right option. ## 02 ## We Review The Details Our team reviews your project type, location, opening, timeline, and performance needs. ## 03 ## You Get the Next Step We help you understand your options so you can move toward the right fiberglass door solution. [ Start a Quote Request ](#form) ## Common Questions About Inline Fiberglass Doors Find clear answers to common questions about fiberglass doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Do you offer both entrance doors and sliding patio doors? Yes. Inline offers 4500 Series fiberglass entrance doors and 600 Series sliding patio doors. The entrance door line is best for front entries and design-driven projects, while the sliding patio door line is best for patios, large openings, and indoor-outdoor access. Are Inline fiberglass doors energy efficient? Inline fiberglass doors are designed to support comfort and energy performance. NFRC and AAMA documentation applies across Inline products. For the 600 Series sliding patio door, Energy Star Most Efficient applies with triple glazing. Exact performance still depends on the door series, glass package, size, configuration, and project requirements, so request product documentation before final specification. Do you offer custom sizing? Inline offers standard and oversized fiberglass door products. The spreadsheet does not provide exact product-level size limits for the 4500 and 600 Series doors, so exact sizing should be confirmed during quoting based on the opening, configuration, glass package, and project requirements. Can I choose custom colours or design options? Yes. Inline can do any colour for fiberglass doors. Standard colour names, finish options, and exact door finish processes/details should still be confirmed during quoting. Send your project details, preferred style, and any drawings or inspiration photos. Can I choose custom colours? Yes. White is the standard colour; Commercial Brown, Almond, Brownstone, Slate, Tricorn Black, and Iron Ore are semi-standard colours; and anything else is custom. What is the difference between entrance doors and sliding patio doors? Entrance doors are typically used for front entries and exterior access points where security, curb appeal, and design are major priorities. Sliding patio doors are used for larger openings where natural light, outdoor access, and smooth operation matter. Can homeowners Request a Free Quote directly? Yes. Toronto homeowners can be served directly. Inline has its own installers and offers a turnkey replacement service that removes existing products and installs new products tailored to the project. For projects outside Inline’s direct service area are handled by Inline’s trusted dealer network, routing should still be confirmed during the quote process. Can architects or builders request technical documents? Yes. Architects, builders, developers, and specifiers should request product specs, drawings, certification details, and technical support for the exact door series and configuration they are considering. ## Ready to Start Your Fiberglass Door Project? Tell us about your entrance door or sliding patio door project. Our team will review your request and help you take the next step toward a free quote, product guidance, showroom visit, direct installation path, or specification support. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](#form) ## Tell Us About Your Fiberglass Door Project Our team will review your request and help you confirm the right next step. Product inquiry sales form Subscribe First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Project Type: - Select -ResidentialCommercialMulti-unitPassive HouseNot sure Product Type Product TypeWindowsEntrance DoorsSliding DoorsPassive HouseNot sure Product Series Product Series3003254006007008008509004500 Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Architect Specifier Package Request](https://inlinefiberglass.com/architect-specifier-package-request/) **Published:** June 16, 2026 **Author:** anthony@webhaven.ca **Content:** # Request Fiberglass Window Specs, Drawings, and Product Documents Request a spec package from Inline Fiberglass and get access to the product information needed for your project. [ Request Spec Package ](#form) [ Talk to a Specialist ](tel:1-866-566-5656) ## Get the Product Information You Need for Your Project Planning a residential, commercial, Passive House, or high-performance building project? Request a window spec package from Inline Fiberglass and get access to the product information needed to evaluate fiberglass windows and doors for your project. Inline supports architects, specifiers, builders, developers, and design teams with technical documents, product guidance, performance information, and project-specific support. **Request your package to access:** CAD and PDF drawings, product data, performance documents, installation resources, certification information where applicable, EPD resources, and support from the Inline team. [ Request Spec Package ](#form) ## Technical Information for Better Specification Decisions Inline Fiberglass is a Canadian manufacturer focused on fiberglass windows and doors for residential, commercial, architectural, and high-performance projects. The product line includes window systems, entrance doors, sliding patio doors, and Passive House / high-performance product pathways. Specifier confidence depends on more than a brochure. Inline helps project teams review product fit, document availability, performance requirements, and certification scope before final selection. ## What makes Inline relevant for specifiers ## Fiberglass-focused product line Inline is built around fiberglass window and door systems, not a mixed catalogue of unrelated frame materials. ## Technical document support Request drawings, product data, specification resources, installation documents, and performance information for the series relevant to your project. ## High-performance project support Select Inline products are designed for high-performance building needs. Contact Inline to confirm the right product, certification details, and documentation for your project. ## Residential and commercial applications Inline supports specification needs for custom homes, renovations, commercial buildings, multifamily projects, and Passive House or energy-focused projects. ## IGMAC-Certified Glass Inline controls more of the product process, including fiberglass lineals, painting, design, and final assembly, supporting stronger quality and product consistency where approved by the client. [ Request Spec Package ](#form) ## What’s Included in the Specifier Package? Your package can be tailored to the product type and project stage. Availability may vary by product series, configuration, and certification scope. ## CAD and PDF Drawings Request fiberglass window CAD drawings and PDF details for relevant Inline window and door systems. These may help your team review frame profiles, product fit, drawing coordination, and early specification needs. **Useful for:** Architectural details, wall assembly planning, product coordination, and drawing review. ## Product Data and Series Information Receive product information for applicable Inline series, including fiberglass windows, entrance doors, sliding patio doors, and high-performance product options. **Relevant product pathways may include:** 300 Series Tilt & Turn Windows, 325 Series Casement / Awning / Fixed Windows, 400 Series Fixed / Strip Windows, 700 Series Casement / Hopper Windows, 800 Series Horizontal Slider Windows, 850 Single Hung Windows, 900 Double Hung Windows, 4500 Series Entrance Doors, and 600 Series Sliding Patio Doors. ## Performance and Certification Documents Request performance documents, certification references, and product-specific information where available. Inline’s technical documentation may include references to PHIUS, PHI, NFRC, AAMA, IGMAC, Energy Star, and other performance-related materials depending on the product and configuration. **Important note:** Certification claims should always be confirmed for the exact product series, glazing package, configuration, and project requirement. ## Passive House and High-Performance Window Specifications For Passive House, PHIUS, low-energy, or high-performance building projects, Inline can help identify which products and documents may be relevant to your project goals. **Use this request if you need:** Passive House window specifications, PHIUS documentation, U-value guidance, glazing package information, or support selecting the right high-performance product pathway. ## EPD and Sustainability Resources Where applicable, request sustainability documentation, including Inline’s Environmental Product Declaration resources, for projects where embodied carbon, lifecycle information, or green-building documentation is part of the specification process. ## Technical Contact Support Some questions cannot be solved with a download alone. Use the form to request follow-up from Inline’s team for product selection, document clarification, custom sizing, commercial coordination, or specification support. [ Request Spec Package ](#form) ## Who Should Use This Form? ## For Architects Use this form when you need product details, drawings, performance documentation, Passive House information, or help confirming the right fiberglass window or door system for your project. ## For Specifiers Request technical documents, certification references, product data, and supporting resources for specification review. ## For Builders and Contractors Submit project details when you need drawings, installation-related documents, product information, or support coordinating product fit with architectural drawings. ## For Developers and Commercial Team Use this request for commercial fiberglass window systems, larger project review, performance documentation, and coordination support. ## For Passive House Teams Request product-specific documentation for Passive House and PHIUS-related information where applicable. ## For High-Performance Project Teams Request product-specific documentation for high-performance building goalsand PHIUS-related information where applicable. ## Get the Product Documents You Need to Specify with Confidence Whether you are reviewing fiberglass window CAD drawings, comparing Passive House window specifications, planning a commercial project, or selecting product details for a custom home, Inline can help you find the right technical resources. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request Spec Package ](#form) ## Common Questions About Architect and Specifier Packages Find clear answers to common questions about Architect and Specifier Packages [ Request Spec Package ](#form) What is included in a window spec package? A spec package may include CAD drawings, PDF product details, product data, performance documents, certification information where applicable, installation resources, EPD documentation, and product guidance from the Inline team. Are fiberglass window CAD drawings available? Yes, CAD and PDF drawings may be available for relevant Inline fiberglass window and door systems. Submit the form with your product interest and project type so the team can direct you to the right documents. Can Inline support Passive House window specifications? Inline can support Passive House and high-performance project discussions. Select products may have applicable Passive House or PHIUS-related documentation. Confirm the exact product, configuration, glazing package, and certification scope with the Inline team before specifying. Are all Inline products Passive House certified? Do not assume all products carry the same certification. Certification scope depends on the product series, configuration, glazing, and performance requirements. Inline can help confirm which documents apply to your project. Can I request documents for commercial projects? Yes. Architects, developers, builders, and commercial project teams can request documents for commercial fiberglass window systems, sliding doors, high-performance windows, and related product pathways. Can Inline help with custom details? Inline can help review custom sizing, product fit, colour options, glass packages, and project-specific requirements. Submit your project details, drawings, or questions through the form. Do I need final drawings before requesting a package? No. Early-stage requests are welcome. If your project is still in schematic design or design development, Inline can help point you toward the product information most relevant to your planning stage. Who will follow up after I submit the request? Inline’s team will review your request and follow up with the appropriate next step, which may include document access, product guidance, or a technical conversation. ## Request Your Spec Package Complete the form below and our team will review your request. To help us send the most relevant documents, please include your role, firm, project type, product interest, and any immediate technical requirements. Architect / Specifier Package Request Form Contact First Name Last Name Phone/Mobile Email Company Name Role: - Select -ArchitectSpecifierBuilderDeveloperConsultantOther Project Name Project Location Products of Interest Select Products of InterestWindowsDoorsPassive HouseProduct AccessoriesInstallation Services Planning Documents Needed Select Planning Documents NeededSpecsCAD or drawingsPerformance dataCertificationsEPDWarrantyInstallation details Project Description / Planning Stage & Project Timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Sustainability](https://inlinefiberglass.com/about/sustainability/) **Published:** June 19, 2026 **Author:** anthony@webhaven.ca **Content:** # Sustainable Fiberglass Windows Built for Long-Term Performance Inline Fiberglass manufactures fiberglass windows and doors for projects where energy efficiency, durability, and responsible material choices matter. [ Request Documentation ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Download Inline EPD ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Sustainability Starts with Better Building Performance Windows and doors play a major role in the building envelope. Poor-performing products can contribute to heat loss, drafts, comfort issues, and premature replacement. Inline Fiberglass focuses on fiberglass because it supports the qualities many sustainable building projects require: strength, dimensional stability, thermal performance, and long-term durability. For project teams, that means Inline products can support more efficient buildings while helping reduce the need for frequent window and door replacement over time. [ Request Documentation ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Download Inline EPD ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Documentation for Green-Building and Specification Teams Inline can support project teams that need clearer information before selecting or specifying fiberglass windows and doors. **Important note:** Certification and performance details can vary by product series, glass package, configuration, and project requirements. Contact Inline to confirm the right product and documentation for your specific project **Public or requestable documentation may include:** - Environmental Product Declaration resources for select products - Product specifications and Performance data - PHIUS documentation for 325 SER CSM/AWN/FXD, 400 SER, and 3000 SER TNT/FXD - PHI documentation for 3000 SER TNT/FXD - NFRC and AAMA information across Inline products - Energy Star information for all triple-glazed products and select double-glazed products - IGMAC-certified glass unit information - Technical drawings or product details, where available [ Request Documentation ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Download Inline EPD ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Environmental Product Declaration Resources An Environmental Product Declaration, or EPD, provides transparent product information that helps architects, builders, developers, and specifiers evaluate environmental impact during material selection. Inline Fiberglass has EPD documentation available for select fiberglass window products, including 300 SER Fixed and 325 SER CSM/AWN/FXD. Project teams should confirm the current EPD file, date, and scope before using it for specification or green-building documentation. [ Request Documentation ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Download Inline EPD ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Why Fiberglass Supports Sustainable Building Goals Fiberglass windows and doors can support sustainable building goals in several practical ways. ## 1. Long Service Life A product that lasts longer can reduce the need for premature replacement. Inline fiberglass products are designed for long-term performance, helping support durable building envelopes across residential, commercial, and high-performance projects. ## 2. Thermal Performance Energy-efficient fiberglass windows help support better comfort and reduced heat transfer through the building envelope. For homeowners, that can mean a more comfortable living space. For architects and builders, it can support broader performance goals. ## 3. Dimensional Stability Fiberglass is valued for its ability to remain stable through changing temperatures. That stability helps support long-term fit, operation, and seal performance when compared with materials that expand and contract more aggressively. ## 4. Reduced Replacement Frequency Sustainability is not only about the first day a product is installed. It is also about how the product performs over years of use. Durable fiberglass windows and doors can help reduce replacement cycles when properly selected, installed, and maintained. ## 5. High-Performance Building Compatibility Inline offers product options for performance-led projects, including Passive House and high-efficiency building applications where applicable. Project teams should confirm product-specific certification details before specification. ## Manufacturing Control Matters Inline’s manufacturing story is part of its sustainability story. Inline is a fully vertically integrated fiberglass window and door manufacturer. Its process includes fiberglass lineals, painting, design, and final assembly, giving the team greater control over product consistency and finish quality. For buyers, that matters because better consistency can support: - Stronger product confidence - More reliable finishes - Better long-term performance - Clearer technical support - Better alignment between product selection and project goals ## Supporting Energy-Efficient and High-Performance Projects High-performance projects need windows and doors that do more than look good. They need products that support comfort, airtightness goals, thermal performance, and long-term durability. Inline fiberglass windows and doors are used in residential, commercial, and high-performance building contexts. Select Inline products have PHIUS or PHI documentation, including PHIUS documentation for 325 SER CSM/AWN/FXD, 400 SER, and 3000 SER TNT/FXD, and PHI documentation for 3000 SER TNT/FXD. Project teams should confirm the correct series, configuration, and documentation before specifying. For specification teams, the best next step is to request product-specific documentation before final selection. [ Request Product Support ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Find the Right Sustainability Resources for Your Project Inline manufactures a broad fiberglass product lineup for different project needs. ## For Homeowners Learn how fiberglass windows and doors can support comfort, durability, and energy efficiency in your home. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## For Architects and Specifiers Access EPD information, product specs, performance data, and documentation needed to evaluate Inline fiberglass windows and doors for your project. [ Request a Spec Support ](https://inlinefiberglass.com/resources/technical-spec-download/) ## For Builders and Contractors Get practical product information, quote support, and documentation to help select the right fiberglass window or door system for the build. [ Request Documentation ](https://inlinefiberglass.com/resources/technical-spec-download/) ## For Developers and Commercial Review durable, energy-efficient fiberglass window and door options for commercial and multi-unit projects. [ Commercial Project Support ](https://inlinefiberglass.com/contact/) ## Sustainability and Performance Resources ## Environmental Product Declaration Review available EPD documentation for select Inline fiberglass window products, including 300 SER Fixed and 325 SER CSM/AWN/FXD. Confirm current file details before using the EPD for project documentation. [ Download EPD ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Product Specifications Request product details for the window or door series being considered for your project. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Passive House & High-Performance Products Explore product options for energy-efficient and performance-led projects. [ High-Performance Products ](https://inlinefiberglass.com/products/passive-house-high-performance/) ## Technical Downloads Access available product documents, drawings, and performance information. [ Technical Downloads ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Common Questions About Sustainability & EPD Find clear answers to common questions about Sustainability & EPD [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What is an EPD? Yes, Inline has an Environmental Product Declaration, or EPD, resources available for select products, including 300 SER Fixed and 325 SER CSM/AWN/FXD. The exact EPD title, date, file, and URL should be confirmed before final publication or specification use. Does Inline Fiberglass have an EPD? Inline has EPD resources available for project teams. If you need documentation for a specification, tender, green-building review, or commercial project, contact Inline to request the most relevant document for your product and project type. How do fiberglass windows support efficient buildings? Fiberglass windows can support efficient buildings through thermal performance, strength, dimensional stability, and long-term durability. These qualities help support better building-envelope performance when the right product, glass package, and installation approach are used. Are all Inline products certified for Passive House projects? No. Certification is product-specific. Client-confirmed PHIUS products include 325 SER CSM/AWN/FXD, 400 SER, and 3000 SER TNT/FXD. Client-confirmed PHI documentation applies to 3000 SER TNT/FXD. Contact Inline to confirm the correct documentation for your project. Are technical documents available for architects and builders? Yes. Architects, builders, developers, and specifiers can request product information, technical documents, performance data, and EPD resources where available. Why is durability part of sustainability? Durability matters because products that last longer can reduce the need for premature replacement. Long-lasting fiberglass windows and doors can support more responsible building decisions over the life of a home or building. Can homeowners use this information too? Yes. While EPDs and technical documents are often used by architects and commercial project teams, homeowners can still use this page to understand why fiberglass windows and doors are a strong option for comfort, energy efficiency, and long-term value. ## Need EPD, Sustainability, or Product Documentation? Whether you are specifying a commercial project, planning a high-performance home, or comparing sustainable window materials, Inline can help you find the right documentation. Tell us about your project and our team will help you access the right EPD resources, product specs, or technical support. [ View EPD Documentation ](#) Request Documentation --- ### [Our Story](https://inlinefiberglass.com/about/our-story/) **Published:** May 26, 2026 **Author:** anthony@webhaven.ca **Content:** # Built Around Fiberglass Since 1992 Inline has grown from a Toronto-based manufacturer into a trusted source for fiberglass windows and doors used in residential, commercial, architectural, high-performance, and dealer-supported projects. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ About Inline ](#more) ## Inline Fiberglass began with a focused idea: build better windows and doors by specializing in fiberglass. Fiberglass is not one product line among many at Inline. It is the material the company is built around. From its manufacturing facility in Etobicoke, Inline continues to focus on the same practical goal: making fiberglass window and door systems that support long-term performance, comfort, durability, and clean design. [ Start Your Project ](https://inlinefiberglass.com/request-a-quote/) [ Visit a Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## A Canadian Manufacturer With Deep Fiberglass Focus Inline controls more of the product process than many typical window and door sellers. That includes fiberglass lineals, painting, desInline Fiberglass has spent more than three decades developing products around one core material: fiberglass. That focus matters. Many window and door companies sell several material types. Inline’s story is different. The company has built its product knowledge, manufacturing process, and technical support around fiberglass windows and doors. Today, Inline supports a wide range of project needs, including: - Fiberglass windows for homes and custom builds - Fiberglass entrance doors and sliding patio doors - High-performance and Passive House-oriented projects - Commercial and multi-unit building applications - Dealer-supported availability across select regions - Architect, builder, and specifier support The result is not a generic window company story. It is the story of a manufacturer that stayed focused on one material and continued building around its strengths. ## More Than 30 Years of Manufacturing Progress ## 1992 — A Fiberglass-Focused Manufacturer Begins Inline Fiberglass was established in Toronto with a clear manufacturing focus: fiberglass windows and doors. Instead of building around vinyl, aluminum, or wood, Inline centered its product development around pultruded fiberglass because of its strength, dimensional stability, thermal performance, and long-term durability. ## Growth Into Residential and Commercial Projects As demand for stronger, more energy-efficient window and door systems grew, Inline expanded its product range to support more project types. Homeowners, builders, architects, developers, and commercial buyers began looking for products that could handle more than basic replacement needs. Inline’s fiberglass systems helped support projects where performance, comfort, appearance, and durability all mattered. ## Product Line Expansion Over time, Inline’s product offering grew to include multiple fiberglass window series, entrance doors, sliding patio doors, high-performance products, and design options for glass, colours, grilles, and hardware. That product breadth allows the company to support many types of buildings without moving away from its core material focus. ## Manufacturing Control and Technical Development Inline’s process has continued to center on manufacturing control. By keeping key parts of the process close to the company, Inline can better manage product quality, consistency, finish options, and technical support. This matters for homeowners who want confidence in what they are buying. It also matters for architects, builders, and commercial teams that need product information, documentation, and reliable guidance. ## Today — Supporting Homes, Buildings, Dealers, and Specifiers Today, Inline Fiberglass continues to serve homeowners, architects, builders, developers, commercial buyers, and dealers from its Toronto-area manufacturing base. The company’s story is still rooted in the same idea: stay focused on fiberglass and keep improving how fiberglass windows and doors are made, specified, and supported. ## Why Our History Matters to Your Project Inline’s history is not just about how long the company has been in business. It is about what that experience means for your project. ## Better Manufacturing Control Inline controls more of the product process, including fiberglass production, painting, design, and final assembly. That level of control helps maintain consistency from early selection through to finished window or door production. ## Stronger Product Knowledge By focusing on fiberglass, Inline provides practical guidance across window and door options. That helps homeowners compare, builders plan, and architects request the right technical details with more clarity. ## Consistent Finishes and Options Inline’s manufacturing process supports a wide range of finish options across colours, glass, grilles, and hardware. This helps maintain consistency and coordination across both residential and commercial applications. ## For Performance-Focused Projects Fiberglass is valued for strength, thermal stability, and long-term durability. Inline’s product history supports projects where comfort, energy performance, and material reliability are critical. ## Support for Different Buyer Paths Inline supports different project needs, from homeowner quotes to architectural specifications and builder coordination. The goal is to make each path clearer, more direct, and easier to navigate. ## More Predictable Project Outcomes Inline’s experience and manufacturing control help reduce uncertainty. From product specification to production and final delivery. That means fewer surprises and more confidence. ## How Inline Helps Different Customers Build With Confidence Homeowners, developers, architects, dealers and distributors, every project starts in a different place. Inline will help you choose the right windows and doors to positively impact the comfort, energy performance, durability, and long-term value of your properties. Homeowners ## Upgrade Your Home with Fiberglass Windows and Doors Planning new windows or doors for your home? Inline can help you understand fiberglass product options, design choices, and the next step toward a quote. [ Start a Home Project ](https://inlinefiberglass.com/request-a-quote/) Architects & Specifiers ## Specify with Clear Product Information Need product data, drawings, certification details, or technical support? Inline can help you review the right product path for residential, commercial, and high-performance projects. [ Request Spec Support ](https://inlinefiberglass.com/resources/technical-spec-download/) For Builders and Contractors ## Build with Reliable Product Solutions Working on a custom home, renovation, or commercial project? Inline can help with product guidance, quote support, and window and door options built around fiberglass performance. [ Request Project Support ](https://inlinefiberglass.com/contact/) Developers & Commercial Buyers ## Get the Right Product Guidance for Your Project Planning a larger project? Inline supports commercial and high-performance building needs with fiberglass window and door products, technical documentation, and project experience. [ Discuss a Commercial Project ](https://inlinefiberglass.com/contact/) Dealers & Distributors ## High-Performance Fiberglass for Commercial Builds Interested in carrying Inline products? Contact the Inline team to learn more about product availability, dealer support, and potential market opportunities. [ Beccome a Dealer ](https://inlinefiberglass.com/dealers/) ## A Different Approach Built on One Clear Focus Inline’s story is simple: fiberglass is all we do. That focus helps the company avoid the common problem of trying to be everything to everyone. Instead, Inline builds its expertise around one material and one category: fiberglass windows and doors. This gives buyers a clearer reason to trust the product path: - A focused manufacturer, not a generic supplier - A product line built around fiberglass performance - Manufacturing control across important production steps - Residential and commercial project experience - Support across all project stakeholders - Technical documentation and product guidance The best window or door is not just the one that looks right on day one. It is the one that still supports comfort, performance, and usability years later. ## Visit Inline in Etobicoke to start your project with confidence Inline Fiberglass is headquartered and manufactures from its Toronto-area facility in Etobicoke, Ontario. Visitors who want to see products, discuss options, or better understand the product line can contact Inline to ask about showroom availability and the best next step for their project. [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) [ Contact Inline Today ](https://inlinefiberglass.com/contact/) ## Common Questions About Inline Fiberglass Windows and Doors Find clear answers to common questions about fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What is Inline Fiberglass? Inline Fiberglass is a Canadian fiberglass window and door manufacturer based in Etobicoke / Toronto, Ontario. The company focuses on fiberglass windows, entrance doors, sliding patio doors, and high-performance product applications for residential, commercial, architectural, and dealer-supported projects. When was Inline Fiberglass founded? Inline Fiberglass was established in 1992. The company has spent more than 30 years focused on fiberglass window and door manufacturing. Where are Inline Fiberglass products made? Inline Fiberglass operates from its manufacturing and corporate headquarters in Etobicoke / Toronto, Ontario. This location supports key manufacturing and business operations. Is the legal name Inline Fiberglass Ltd. or Inline Fiberglass Inc.? Source materials reference both Inline Fiberglass Ltd. and Inline Fiberglass Inc. The correct legal entity should be confirmed before publishing legal, footer, warranty, or formal corporate copy. Does Inline Fiberglass work directly with homeowners? Inline supports homeowner inquiries, but the correct path may depend on project type, location, dealer availability, and installation needs. Homeowners can start by requesting a quote or contacting Inline for guidance. Does Inline Fiberglass sell through dealers? Yes. Inline works with authorized dealers in select regions. Visitors can use the dealer locator or contact Inline to confirm the right sales or support path for their area. Does Inline install windows and doors? Installation wording should be confirmed before publishing. In many cases, the right path may involve an authorized dealer, contractor, builder, or project partner. The safest message is: contact Inline to confirm the best next step for your location and project type. Does Inline support architects and builders? Yes. Inline supports architects, builders, specifiers, developers, and commercial buyers with product information, technical documents, project guidance, and specification support. Are all Inline products certified for Passive House projects? Do not assume that every product has the same certification. Select Inline products may support high-performance or Passive House-oriented projects. Contact Inline to confirm the right product, certification scope, and documentation for your specific project. ## Start with the Right Fiberglass Window or Door Path Whether you are planning a home upgrade, custom build, commercial project, Passive House-oriented design, or dealer inquiry, Inline can help you find the right fiberglass window or door path. [ Start a Project Today ](#) [ Request a Free Quote ](#) --- ### [Manufacturing Pultrusion](https://inlinefiberglass.com/about/manufacturing-pultrusion/) **Published:** June 19, 2026 **Author:** anthony@webhaven.ca **Content:** # Manufacturing & Pultrusion Process Inline Fiberglass is built around one material: fiberglass. As a vertically integrated fiberglass manufacturer, Inline controls key production steps including pultrusion, painting, assembly, and quality control. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request Information ](https://inlinefiberglass.com/contact/) ## Manufacturing Control Behind Better Fiberglass Windows Our manufacturing process gives us greater control over the parts that matter most, from pultruded fiberglass lineals to painting, design, and final assembly. That control helps support product consistency, finish quality, thermal performance, and long-term durability across residential, commercial, and high-performance building projects. When you choose pultruded fiberglass windows, you are not just choosing a frame material. You are choosing a manufacturing method designed for strength, dimensional stability, and performance-focused construction over time. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to a Specialist ](tel:1-866-566-5656) ## Why the Manufacturing Process Matters Many window companies assemble products from materials made elsewhere. Inline’s advantage is different. Inline controls key production steps including pultrusion, painting, assembly, and quality control. This gives the team greater control over product consistency, finish quality, and final inspection before completed window and door systems move forward. This gives the team tighter control over quality, fit, finish, and product consistency before the finished unit reaches the project site. **For homeowners,** that means windows and doors designed for comfort, durability, and clean design. **For architects, builders, and specifiers,** it means clearer product confidence, better technical support, and a stronger basis for selecting fiberglass window frames for demanding projects. ## How Pultruded Fiberglass Window Frames Are Made Pultrusion is the process used to create strong fiberglass lineals for window and door frames. Unlike vinyl extrusion, which pushes heated plastic through a die, pultrusion pulls continuous fiberglass reinforcement through resin and a heated die. The result is a rigid fiberglass profile that can be cut, finished, and assembled into high-performance window and door systems. ## 1. Continuous Fiberglass Reinforcement The process starts with continuous strands of fiberglass. These strands are aligned to help create strength through the full length of the frame profile. This is one reason pultruded fiberglass windows are different from many vinyl windows. The frame is not simply shaped plastic. It is a fiber-reinforced material designed for structural stability. ## 2. Resin Saturation The fiberglass reinforcement is drawn through a resin system. The resin surrounds the fiberglass strands and helps form the final composite material. This step matters because even saturation helps support strength, moisture resistance, and consistent material performance. ## 3. Heated Die Forming The resin-coated fiberglass is pulled through a heated die. This shapes the material into the exact frame profile needed for Inline’s window and door systems. Inside the die, the material cures into a rigid fiberglass lineal. ## 4. Cooling and Cutting After curing, the fiberglass profile is cooled and cut into specific lengths. These lineals then move into the next stages of production. ## 5. Painting, Design, and Assembly The finished fiberglass lineals can be painted, prepared, and assembled into window and door units. This is where manufacturing control becomes especially important. Precise assembly helps support fit, sealing, finish quality, and long-term product consistency. ## Built with Quality Control at Each Major Step A premium window is only as strong as the process behind it. ## Pultrusion Fiberglass lineals are produced through a pultrusion process designed to create strong, stable frame profiles. ## Painting and Applied Finishes Inline can support custom colour requests, including any colour, subject to project review. AAMA coating references should only be used for applied finishes. ## Assembly Final assembly is part of Inline’s controlled manufacturing process and supports product consistency, fit, and finish. ## Quality Control Inline’s confirmed process includes quality control after pultrusion, painting, and assembly. ## Technical Documentation PDF and CAD drawings should be made available publicly where applicable. Exact file lists and URLs should be confirmed before publishing. ## Product-Specific Certifications Certification details for individual Inline window and door products, including performance standards, and energy-efficiency designations. ## Stronger Fiberglass Window Frames Pultruded fiberglass frames are designed for strength and stability. This helps support larger glass areas, clean sightlines, and long-term frame performance. For projects where durability matters, fiberglass offers a serious advantage over materials that can move, warp, or expand more dramatically under temperature changes. ## Better Dimensional Stability Windows deal with heat, cold, wind, sun, and moisture. Frame movement can affect seals, operation, and long-term performance. Fiberglass is valued because it expands and contracts less than many common window materials. That dimensional stability helps the frame hold its shape through changing conditions. ## Improved Thermal Performance Window frames are part of the building envelope. A weak frame can become a point of energy loss. Fiberglass window frames help support energy-efficient design because the material is less conductive than aluminum and more stable than many vinyl alternatives. This makes fiberglass a strong fit for homeowners, architects, builders, and Passive House-minded projects. ## Finish Flexibility Inline can support custom colour requests, including project-specific colour matching opportunities. Because custom finishes may affect production requirements, finish availability, minimum order quantities, pricing, and lead times, final colour options should be reviewed and confirmed during the quote, specification, or project planning process. ## Long-Term Value Pultruded fiberglass windows are often chosen for their long-term value, not just their initial cost. Homeowners may prioritize comfort, durability, and lower maintenance, while architects, builders, and commercial project teams often value product confidence, frame stability, and long-term building performance. ## Built for Homeowners, Architects, Builders, and Specifiers Inline manufactures a broad fiberglass product lineup for different project needs. ## For Homeowners For direct-service projects, Inline has its own installers and can provide turnkey replacement service, including removal of existing windows and installation of new products tailored to the project. Dealer-supported or out-of-area projects should be confirmed with the Inline team. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## For Architects and Specifiers Get product details, technical documents, drawings, and performance information to help evaluate Inline fiberglass windows and doors for your project. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## For Builders and Contractors Send us your project details, drawings, or product requirements. Our team can help you confirm product fit and next steps. [ Talk to a Specialist ](tel:1-866-566-5656) ## For Commercial Projects Inline supports commercial and high-performance project conversations with technical documentation and product guidance. Contact the team to confirm product fit, certification scope, and available documentation for your project. [ Commercial Project Support ](https://inlinefiberglass.com/contact/) ## Build with the Strength of Fiberglass The right window starts with the right frame material and the right manufacturing process. Inline Fiberglass makes pultruded fiberglass windows and doors for projects where strength, comfort, durability, and clean design matter. Tell us about your project and our team will help you take the next step. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Pultruded Fiberglass Windows Find clear answers to common questions about Pultruded Fiberglass Windows. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What is pultrusion? Pultrusion is a manufacturing process used to make strong fiberglass profiles. Continuous fiberglass reinforcement is pulled through resin and a heated die, where it cures into a rigid frame lineal. For windows and doors, this process helps create fiberglass frames with strength, stability, and consistent shape. Why are pultruded fiberglass windows different from vinyl windows? Vinyl windows are made from plastic. Pultruded fiberglass windows are made from fiber-reinforced composite material. That difference can affect strength, frame movement, temperature stability, finish quality, and long-term durability. Fiberglass is often selected for premium homes, custom builds, commercial projects, and high-performance building needs. Why does fiberglass expand less than some other window materials? Fiberglass is valued for dimensional stability. It responds to temperature changes differently than materials like vinyl or aluminum. That matters because window frames are exposed to heat, cold, and moisture. Less frame movement can help support consistent fit and operation over time. How are colours applied to fiberglass window frames? Inline can support custom colour requests, including any colour, subject to project review. AAMA coating references are only assigned to applied finishes. Exact finish names, standard palette details, minimums, and lead-time impacts should be confirmed during the quote or specification process. What affects long-term window durability? Long-term durability depends on several factors, including frame material, glass package, manufacturing quality, installation quality, exposure conditions, maintenance, and correct product selection. Pultruded fiberglass frames are designed to support long-term strength and stability, but the right product should always be confirmed for the project. Are Inline products suitable for Passive House or high-performance projects? Select Inline products are certified for Passive House-related performance needs. PHIUS applies to 325 SER CSM/AWN/FXD, 400 SER, and 3000 SER TNT/FXD. PHI applies to 3000 SER TNT/FXD. Contact Inline to confirm the right product, certification details, and documentation for your project. Can I get technical documents or product specs? Yes. Architects, builders, developers, and performance-focused buyers can request product specs, drawings, certification details, and technical support. --- ### [Products](https://inlinefiberglass.com/products/) **Published:** May 29, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Window and Door Products Built for Lasting Performance Find the right path for your project, whether you are replacing windows, planning a custom build, specifying a high-performance envelope, or sourcing durable fiberglass products for your customers. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) [ View Products ](#products) ## Fiberglass Windows Explore fiberglass window systems for modern homes, custom builds, commercial projects, and high-performance buildings. Inline offers multiple window series to support different operating styles, design goals, ventilation needs, and project requirements. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) **Best for:** Replacement windows, custom homes, large glass areas, commercial projects, energy-efficient upgrades, and performance-focused designs. - 300 Series Tilt & Turn Windows - 325 Series Casement, Awning, and Fixed Windows - 400 Series Strip / Fixed Windows - 700 Series Casement / Hopper Windows - 800 Series Horizontal Slider Windows - 850 Series Single Hung Windows - 900 Series Double Hung Windows ## Fiberglass Doors Inline fiberglass doors are designed for projects where durability, design flexibility, and long-term performance matter. Choose from entrance door options and sliding patio doors built for residential, architectural, and performance-focused applications. **Best for:** Front entries, patio openings, modern renovations, large glass openings, and energy-efficient door upgrades. - 4500 Series Entrance Doors - 600 Series Sliding Patio Doors [ Explore Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) ## Passive House & High-Performance Products For architects, builders, developers, and performance-focused homeowners, Inline offers product options designed for demanding building envelope needs. PHIUS-certified products include 325 Series CSM/AWN/FXD, 400 Series, and 3000 Series TNT/FXD. PHI certification applies to the 3000 Series TNT/FXD. NFRC and AAMA apply to all products, and all products use IGMAC-certified glass units. Energy Star applies based on glazing configuration. **Best for:** High-performance homes, Passive House projects, commercial specifications, low-energy building designs, and projects requiring product documentation. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Product Options & Support Inline products can be selected with different glass packages, colours, grilles, hardware, and finish options depending on the product series and project requirements. Best for: Design-driven homeowners, architects, builders, and project teams that need help matching product performance with aesthetics. [ View Product Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) ## Find the Right Product Series Every project starts in a different place. Choose the path that best fits your needs, and Inline will help you move toward the right fiberglass window or door solution. ![Inline Fiberglass 300 Series tilt-turn fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/300SERIESOPEN_vector-1920w-1024x1024.webp "300+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 300 Series Tilt & Turn Windows European-style tilt and turn windows designed for flexible ventilation, secure inward operation, and high-performance applications. **Good fit for:** Modern homes, high-performance buildings, projects needing inward operation, and designs where ventilation flexibility matters. [ View 300 Series ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) ![Inline Fiberglass 325 Series casement fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESOPEN_vector-1920w-1024x1024.webp "325+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 325 Series Casement Windows Heavy-duty fiberglass window systems available in casement, awning, and fixed configurations for residential and commercial applications. **Good fit for:** Homes, custom builds, commercial projects, ventilation-focused spaces, and projects requiring strong weather performance. [ View 325 Casement Series ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-casement/) ![Inline Fiberglass 325 Series awning fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIESAWNINGOPEN_vector-1920w-awening-1024x1024.webp "325+SERIES+AWNING+OPEN_vector-1920w-awening - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 325 Series Awning Windows Heavy-duty fiberglass window systems available in casement, awning, and fixed configurations for residential and commercial applications. **Good fit for:** Homes, custom builds, commercial projects, ventilation-focused spaces, and projects requiring strong weather performance. [ View 325 Awning Series ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-awning/) ![Inline Fiberglass 325 Series fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/325SERIES_vector1-1920w-fixed-1024x1024.webp "325+SERIES_vector+(1)-1920w - fixed - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 325 Series Fixed Windows Heavy-duty fiberglass window systems available in casement, awning, and fixed configurations for residential and commercial applications. **Good fit for:** Homes, custom builds, commercial projects, ventilation-focused spaces, and projects requiring strong weather performance. [ View 325 Series Fixed ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-fixed/) ![Inline Fiberglass 400 Series strip fixed fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/405SERIESB_vector-1920w-1024x1024.webp "405+SERIES+B_vector-1920w - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 400 Series Strip / Fixed Windows Fixed and strip window systems designed for clean architectural lines, larger glass areas, and commercial or contemporary design applications. **Good fit for:** Large glass openings, modern architecture, commercial projects, and high-performance fixed window applications. [ View 400 Series ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) ![Inline Fiberglass 700 Series casement/hopper fiberglass window shown open.](https://inlinefiberglass.com/wp-content/uploads/2026/05/700SERIESOPEN_vector-1920w-2-1024x1024.webp "700+SERIES+OPEN_vector-1920w-2 - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 700 Series Casement / Hopper Windows In-swing casement, hopper, and fixed options designed for projects where inward operation, safety, maintenance access, or specific building conditions matter. **Good fit for:** Urban projects, multi-storey buildings, commercial applications, and spaces where outward-opening windows may not be suitable. [ View 700 Series ](https://inlinefiberglass.com/products/fiberglass-windows/700-series-casement-hopper/) ![Inline Fiberglass 800 Series horizontal slider fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/800SERIESOPEN_vector-1920w-1024x1024.webp "800+SERIES+OPEN_vector-1920w - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 800 Series Horizontal Slider Windows Fiberglass horizontal slider windows designed for smooth operation, durability, and practical ventilation in spaces where sliding function is preferred. **Good fit for:** Residential projects, space-conscious layouts, wide openings, and rooms where outward operation is not ideal. [ View 800 Series ](https://inlinefiberglass.com/products/fiberglass-windows/800-series-horizontal-slider/) ![Inline Fiberglass 850 Series single-hung fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/850SERIES_vectorarrow-1920w-2-1024x1024.webp "850+SERIES_vector+arrow-1920w-2 - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 850 Series Single Hung Windows Single hung fiberglass windows with a traditional look and space-saving vertical operation. **Good fit for:** Traditional home styles, bedrooms, narrow exterior spaces, and projects where a fixed upper sash and operable lower sash are preferred. [ View 850 Series ](https://inlinefiberglass.com/products/fiberglass-windows/850-series-single-hung/) ![Inline Fiberglass 900 Series double-hung fiberglass window.](https://inlinefiberglass.com/wp-content/uploads/2026/05/900SERIES_vectorarrow-1920w-1024x1024.webp "900+SERIES_vector+arrow-1920w - Inline Fiberglass - Inline Fiberglass") WINDOWS ## 900 Series Double Hung Windows Double hung fiberglass windows with two operable sashes for flexible ventilation and convenient interior cleaning. **Good fit for:** Traditional homes, renovation projects, bedrooms, living spaces, and projects where classic style and ventilation control are important. [ View 900 Series ](https://inlinefiberglass.com/products/fiberglass-windows/900-series-double-hung/) ![Inline Fiberglass 4500 Series black fiberglass double entrance door.](https://inlinefiberglass.com/wp-content/uploads/2026/05/4500-DOUBLE-DOOR-BLACK-1920w-02-1024x1024.webp "4500-DOUBLE-DOOR-BLACK-1920w-02 - Inline Fiberglass - Inline Fiberglass") Doors ## 4500 Series Entrance Doors Fiberglass entrance doors designed for durability, design flexibility, curb appeal, and long-term performance. **Good fit for:** Front entries, custom homes, renovations, sidelites, transoms, and design-focused door upgrades. [ View 4500 Series ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ![Inline Fiberglass 600 Series black sliding patio door.](https://inlinefiberglass.com/wp-content/uploads/2026/06/600-DOUBLE-DOOR-BLACK-1920w-03-1024x1024.webp "600-DOUBLE-DOOR-BLACK-1920w-03 - Inline Fiberglass - Inline Fiberglass") Doors ## 600 Series Sliding Patio Doors Fiberglass sliding patio doors designed for large openings, smooth operation, thermal performance, and indoor-outdoor connection. **Good fit for:** Patios, terraces, large glass openings, modern homes, commercial projects, and high-performance applications. [ View 600 Series ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## Product Confidence Backed by Fiberglass Focus Inline is not a generic window and door supplier. The company is built around fiberglass products and supports a range of residential, commercial, architectural, and dealer-supported project needs. Inline product pages should help visitors confirm: - Which window or door style fits their project - Which product series matches their design and performance goals - What glass, colour, grille, and hardware options are available - Which technical documents or product specs are needed - Which documents apply to a specific product - Whether the next step should be a quote, spec request, showroom visit, or dealer inquiry [ Ask a Product Specialist ](https://inlinefiberglass.com/contact/) ## Not Sure Which Product You Need? Homeowners, developers, architects, dealers and distributors, every project starts in a different place. Inline will help you choose the right windows and doors to positively impact the comfort, energy performance, durability, and long-term value of your properties. For Homeowners ## Upgrade Your Home with Fiberglass Windows and Doors Start with Fiberglass Windows or Fiberglass Doors if you are upgrading your home, replacing older products, improving comfort, or planning a custom build. **Recommended next steps:** Explore products, view projects, request a quote, or visit the showroom. [ Start a Home Project Quote ](https://inlinefiberglass.com/request-a-quote/) For Architects and Specifiers ## Specify with Clear Product Information Start with Passive House & High-Performance Products, Technical Downloads, or the specific product series you are considering. **Recommended next steps:** Request product specs, confirm scope, review drawings, or speak with technical sales. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) For Builders and Contractors ## Build with Reliable Product Solutions Start with the product category that matches your project scope, then contact Inline for quote support, documentation, and product guidance. **Recommended next steps:** Submit project details, request specs, or ask about product fit and lead-time considerations. [ Request Project Support ](https://inlinefiberglass.com/contact/) For Developers & Commercial Buyers ## Get the Right Product Guidance for Your Project Start with Fiberglass Windows, 400 Series Fixed / Strip Windows, 600 Series Sliding Patio Doors, or Passive House & High-Performance Products. **Recommended next steps:** Review commercial product paths, request documentation, and contact Inline for project guidance. [ Request Commercial Support ](https://inlinefiberglass.com/contact/) For Dealers & Distributors ## High-Performance Fiberglass for Commercial Builds Start with the product overview, then contact Inline to discuss product availability, dealer support, and market fit. **Recommended next steps:** Review product categories and submit a dealer inquiry. [ Become a Dealer ](https://inlinefiberglass.com/dealer-partnership-inquiry/) ## How to Choose the Right Inline Product Every project has different design, performance, and functional requirements. Start by identifying the priorities that matter most to your application. ## Choose by Operating Style If you want flexible ventilation and everyday functionality, start with tilt and turn, casement, awning, hopper, slider, single hung, or double hung options. ## Choose by Design Goal If you want large glass areas, expansive views, or clean architectural lines, fixed and strip window options may be the right place to start. ## Choose by Project Type For residential projects, explore windows and doors. For commercial or high-performance projects, review technical documents and Passive House products. ## Choose by Performance Need If energy performance or certification requirements are important to your project, Inline can help identify the product best suited to your goals. ## Choose by Customization If colour, grille style, glass package, or hardware is important, review the product options page or speak with Inline’s team for guidance. ## Choose by Architectural Style Whether your project is traditional, transitional, or contemporary, different window and door styles can help achieve the look you want. ## Common Questions About Inline Fiberglass Products Find clear answers to common questions about fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What products does Inline Fiberglass make? Inline Fiberglass makes fiberglass window systems, fiberglass entrance doors, sliding patio doors, and high-performance product options for residential, commercial, architectural, and dealer-supported projects. Which fiberglass window series is right for my project? It depends on how the window needs to operate, where it will be installed, the design style, glass requirements, and performance goals. Tilt and turn, casement, awning, fixed, slider, single hung, and double hung options each serve different needs. Does Inline offer fiberglass doors? Yes. Inline offers fiberglass entrance doors and sliding patio doors. These products are designed for durability, energy performance, and design flexibility across different project types. Are Inline products energy efficient? Inline fiberglass windows and doors are designed with energy performance in mind. Exact performance depends on the product series, glass package, size, and configuration. Contact Inline to confirm the right product data for your project. Are all Inline products Passive House or PHIUS certified? Certification scope varies by product and configuration. PHIUS applies to 325 Series CSM/AWN/FXD, 400 Series, and 3000 Series TNT/FXD. PHI applies to 3000 Series TNT/FXD. NFRC and AAMA apply to all products, and all products use IGMAC-certified glass units. Energy Star depends on glazing configuration. Inline can help confirm the right documentation for your project. Can I customize colours, glass, grilles, or hardware? Product options may include different glass packages, colours, grilles, finishes, and hardware depending on the series and configuration. The best next step is to review the options page or ask Inline for product-specific guidance. What should I prepare before requesting a quote? Helpful details include your project location, product type, rough sizes if available, timeline, photos or plans, and whether you are a homeowner, architect, builder, developer, dealer, or other project contact. Does Inline install directly? Yes. Inline has its own installers and offers turnkey replacement service for direct projects, including removal of existing windows and installation of new products. Dealer-supported or regional projects may follow a different path, so contact Inline to confirm the right process for your location. ## Ready to Find the right Fiberglass Product? Tell Inline about your project and the we’ll help you take the next step. Whether you need windows, entrance doors, sliding patio doors, product specs, or commercial project support, start with the product path that fits your needs. [ Start a Project Today ](#) [ Request a Free Quote ](#) --- ### [Terms and conditions](https://inlinefiberglass.com/terms-and-conditions/) **Published:** June 22, 2026 **Author:** anthony@webhaven.ca **Content:** # Terms & Conditions / Disclaimer Continue reading below for the websites terms and conditions / disclaimer [ Read More ](#article) ## Information Inline Fiberglass Ltd provides information on this website ‘as is’. Efforts are made to ensure the information is accurate and current at the time of publication. However, Inline Fiberglass Ltd accepts no liability for any errors or omissions. Inline Fiberglass Ltd will not be liable for any loss of profits or damage of any kind (including consequential or economic loss) as a result of information contained on this website. ## Disclaimer In addition to all the other Terms and Conditions listed on our website, Inline Fiberglass Ltd does not endorse, recommend, or make any representations or warranties about the service or installation provided by any installer or remodeler, including but not limited to installers/remodelers located on or obtained through the use of any Inline Fiberglass Ltd website. Any information provided by Inline Fiberglass Ltd is solely for informational purposes only. We make no guarantees or representations regarding the skills of any installer/remodeler, nor do we guarantee or warrant the outcome and quality of the job that they may perform if you elect to retain their services. The installers/remodelers are not employees or agents of Inline Fiberglass and your choice to use any installer/remodeler is at your own risk. Your rights are governed by the terms of the contract you enter into with the installer/remodeler you select, and by applicable federal, state, provincial and/or local laws. Inline Fiberglass SPECIFICALLY DISCLAIMS ANY LIABILITY FOR ANY INJURY OR OTHER DAMAGES RESULTING FROM YOUR CHOICE TO USE ANY INFORMATION OBTAINED REGARDING INSTALLERS/REMODELERS INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES OR CLAIMS ARISING OUT OF OR IN ANY WAY CONNECTED WITH DISPUTES, CONTRACTS, OR YOUR DEALINGS WITH THE INSTALLERS/REMODELERS. Should you have a dispute with any installer/remodeler, YOU HEREBY AGREE TO RELEASE INLINE FIBERGLASS AND ITS AGENTS, EMPLOYEES, PARENT, AFFILIATES, OR SUBSIDIARIES FROM ANY DAMAGES OR CLAIMS OF EVERY KIND OR NATURE, SUSPECTED AND UNSUSPECTED, KNOWN AND UNKNOWN, AND DISCLOSED OR UNDISCLOSED, INCLUDING CONSEQUENTIAL AND INCIDENTAL DAMAGES, ARISING OUT OF OR IN ANY WAY CONNECTED WITH SUCH DISPUTES AND YOUR DEALINGS WITH THE INSTALLERS/REMODELERS. ## Hyperlinks and Downloads The links to third-party sites within this website are provided solely for you to have a look at. Inline Fiberglass does not endorse, or accept liability for, any content or downloads within sites which you may access via a hyperlink from our website. In addition, we do not accept liability in connection with any downloads included in our website. ## Copyright and Trademarks All material published on this website is Inline Fiberglass Ltd. copyright and is protected under law. © 2019 Inline Fiberglass Ltd. All rights reserved. The Inline Fiberglass logo is a registered trademark of Inline Fiberglass Limited. --- ### [Passive House Windows Guide](https://inlinefiberglass.com/resources/passive-house-windows-guide/) **Published:** June 14, 2026 **Author:** anthony@webhaven.ca **Content:** # Passive House Windows Built for High-Performance Projects Passive House buildings need more than ordinary windows. [ Read More ](#article) ## What to Look for in Passive House Windows Passive House buildings need more than ordinary windows. They need window and door systems that help support thermal performance, airtightness, comfort, and long-term envelope durability. This guide explains what to look for in Passive House windows, how certifications such as PHI and PHIUS fit into the decision, and how Inline Fiberglass can support homeowners, architects, builders, and project teams with high-performance fiberglass windows and doors. [ Passive House Spec Package ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to Technical Sales ](tel:1-866-566-5656) ## What Are Passive House Windows? Passive House windows are high-performance windows designed to help reduce heat loss, control air leakage, improve comfort, and support the overall energy goals of a Passive House or high-performance building. The window is not judged by the glass alone. Frame material, glazing, spacers, seals, installation details, climate zone, and product certification all matter. A strong Passive House window strategy looks at the full assembly and how it performs inside the building envelope. For Inline Fiberglass, the strongest fit is high-performance fiberglass window and door systems that combine stable frames, advanced glazing options, product documentation, and spec support for performance-focused projects. ## Why Passive House Projects Need the Right Window Partner Windows are one of the most important parts of a high-performance building envelope. Even a well-insulated wall can underperform if the windows introduce thermal bridging, air leakage, condensation risk, or poor comfort near the glass. For Passive House and PHIUS projects, the right window partner should help you answer practical questions: - Which product series is the right fit? - What glass package is needed? - What certification or performance documentation is available? - How does the product support airtightness and thermal comfort? - What details should the architect, builder, or energy consultant review before ordering? Inline’s sitemap strategy specifically positions this page to build authority and capture Passive House leads by educating visitors on thermal performance, airtightness, certification, comfort, product selection, documentation, and technical-sales support. ## Inline Fiberglass and Passive House Window Performance Inline Fiberglass manufactures fiberglass windows and doors for residential, commercial, architectural, and high-performance building needs. Fiberglass is a strong fit for performance-focused projects because it supports dimensional stability, durability, thermal performance, and clean design. Select Inline product configurations have Passive House or PHIUS relevance. For example, the company information source identifies Phius Blue Path Certification for the 400 Series Fixed Window and 600 Series Sliding Door configurations, and notes that performance metrics such as U-values, SHGC, and visible transmittance are supported through independent technical documentation. **Important certification note:** Certification scope should always be confirmed by product, configuration, glass package, and current documentation. Not every product, size, glazing package, or project condition should be assumed to carry the same certification status. [ Request Certification Details ](https://inlinefiberglass.com/resources/technical-spec-download/) ## What Makes a Window Suitable for Passive House? ## 1. Low Heat Loss Passive House windows need to help reduce heat transfer through the glass, frame, spacer, and sash. That usually means a carefully selected glazing package, warm-edge spacer, insulated glass unit, and thermally efficient frame. Inline’s fiberglass frames help reduce thermal bridging compared with more conductive materials, while high-performance glass packages can be selected based on the project’s performance goals. ## 2. Airtightness A high-performance building depends on controlling air leakage. Window operation, gasket design, installation detailing, and frame stability all play a role. For Passive House projects, airtightness should be considered early in the specification process so the selected product, rough opening, installation approach, and enclosure details work together. ## 3. Comfort Near the Glass A good Passive House window strategy is not only about energy use. It is also about how the room feels. Better thermal performance can help reduce cold glass surfaces, drafts, and temperature swings near windows and doors. This is especially important in Canadian climates, where winter comfort and condensation management are major design concerns. ## 4. Climate-Specific Selection Passive House windows in Canada may need different glass and performance choices than windows used in milder regions. Orientation, solar gain, winter heat loss, summer overheating, wind exposure, and climate zone all matter. A south-facing fixed window in one project may need a different package than an operable window on a shaded or high-exposure elevation. ## 5. Documentation and Coordination Passive House projects require better documentation than standard window replacement projects. Architects, builders, energy consultants, and owners may need drawings, product data, certified configurations, U-values, SHGC details, and installation guidance. Inline’s Master Copy Brief recommends that specifier-focused pages emphasize product specs, technical downloads, performance data, certifications, drawings, and documentation support. ## Inline Product Pathways for Passive House and High-Performance Projects ## 400 Series Fixed / Strip Windows Best suited for modern designs, large fixed openings, commercial-style glass areas, and projects where sightlines and thermal performance matter. The company information source identifies a Phius 400 Fixed configuration with Phius Blue Path Certification and specific NFRC product information. This makes the 400 Series an important product pathway for Passive House and high-performance projects, subject to configuration review. [ Explore 400 Series Windows ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) ## 325 Series Awning Windows Best suited for ventilation, weather protection, and operable window needs in high-performance residential or commercial projects. The company source notes that the Awning iteration of the 325 Series is Phius Certified, making it relevant for Passive House design discussions where operable performance is required. [ Explore 325 Series Awning Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-awning/) ## 300 Series Tilt & Turn Windows Best suited for projects that need European-style operation, strong sealing, secure ventilation, and triple-glazing capability. The 300 Series is described as using an advanced gasket system and a glazing pocket capable of accommodating thicker insulating glass units, making it a relevant product to review for high-performance applications. [ Explore 300 Series Tilt & Turn Windows ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) ## 600 Series Sliding Patio Doors Best suited for large openings, patio access, modern homes, and high-performance projects that need a sliding door option. The company source identifies the 600 Series Sliding Door as having Phius Blue Path Certification in a specific certified configuration, with triple-pane glass and documented performance values. [ Explore 600 Series Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## How to Plan Passive House Windows for Your Project ## Step 1: Define the Project Type Start by identifying whether the project is a certified Passive House, a PHIUS project, a net-zero or high-performance home, a commercial retrofit, or simply an energy-efficient upgrade. This matters because certification-driven projects usually require more documentation and coordination than general energy-efficiency projects. ## Step 2: Confirm the Climate and Performance Goals The right window package depends on the project’s location, orientation, glass area, wall assembly, heating/cooling strategy, and energy model. For projects in Canada, this should be reviewed early. A window that looks suitable on paper may still need configuration-specific review. ## Step 3: Choose the Right Product Series Different window and door systems serve different roles. Fixed windows, operable windows, tilt-and-turn units, awnings, and sliding doors each solve different design problems. A product specialist can help identify which series best matches the project’s design, certification, comfort, and budget goals. ## Step 4: Review Technical Documents Before specifying or ordering, review the relevant product data, drawings, certification documents, glazing options, and installation requirements. This is especially important for architects, builders, and energy consultants working toward Passive House or PHIUS targets. ## Step 5: Submit Project Details For the best guidance, provide the project location, product types needed, drawings or plans if available, desired timeline, and any certification requirements. [ Passive House Spec Package ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to Technical Sales ](tel:1-866-566-5656) ## Why Fiberglass Works Well for Passive House Windows Fiberglass is not the only factor in Passive House window performance, but it is an important one. A high-performance window frame should stay stable, reduce thermal bridging, support durable seals, and perform across changing seasons. Inline’s company source describes fiberglass as having low thermal conductivity and a coefficient of expansion similar to glass, helping support frame stability and long-term insulated glass unit performance. That makes fiberglass a practical material choice for projects where comfort, durability, and energy performance matter. **Practical Benefits of Fiberglass for High-Performance Projects** - Helps reduce frame-related thermal bridging - Supports dimensional stability through temperature changes - Works well with high-performance insulated glass units - Provides strength for larger openings and clean sightlines - Supports residential, commercial, and architectural applications - Helps reduce reliance on weaker or more conductive frame materials ## Support for Homeowners, Architects, Builders, and Developers ## For Homeowners You do not need to understand every Passive House term before reaching out. Tell Inline about your project, goals, and window or door needs. The team can help you understand a product path. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## For Architects and Specifiers Request product data, certification details, drawings, and technical support for the product series being considered. Inline can help you confirm which documents apply to the selected product configuration. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## For Builders and Contractors Get support with product selection, project coordination, window and door options, and technical details that may affect ordering or installation planning. [ Talk to Technical Sales ](tel:1-866-566-5656) ## For Developers and Commercial Teams Review commercial project needs, performance requirements, product documentation, and project support options for larger or more complex buildings. [ Request Project Support ](https://inlinefiberglass.com/contact/) ## Common Questions About Passive House Windows Find clear answers to common questions about Inline fiberglass windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What are Passive House windows? Passive House windows are high-performance windows designed to help reduce heat loss, limit air leakage, improve comfort, and support the energy goals of a Passive House or high-performance building. Are all Inline Fiberglass windows Passive House certified? Do not assume that every product, size, or configuration carries the same certification. Certification scope should be confirmed by product series, glass package, configuration, and current documentation. What is the difference between PHI and PHIUS? PHI refers to the Passive House Institute, while PHIUS refers to Passive House Institute US. Both relate to high-performance building standards, but they use different certification frameworks. For a real project, confirm which standard your architect, builder, or consultant is targeting. What are PHIUS certified windows? PHIUS certified windows are windows that meet applicable PHIUS performance criteria for a specific certified configuration. The key point is that certification usually applies to defined product configurations, not necessarily every possible version of a product. Does Inline offer PHIUS certified windows? Select Inline product configurations are identified in the project sources as having Phius Blue Path Certification, including specific 400 Series Fixed Window and 600 Series Sliding Door configurations. Always request current documentation for the exact product and configuration being considered. Are Passive House windows always triple pane? Not always in every market or project, but triple glazing is common in cold climates and high-performance buildings because it can help improve thermal performance and comfort. The right glass package should be selected based on climate, orientation, project goals, and certification requirements. Are Passive House windows worth it for a regular home? They can be worth considering when comfort, energy efficiency, durability, and long-term performance are priorities. Not every home needs full Passive House certification, but many homeowners still benefit from high-performance window and door products. Can Passive House doors be part of the same project? Yes. Doors matter because they are also part of the building envelope. Inline offers fiberglass entrance doors and sliding patio doors, including the 600 Series Sliding Patio Door pathway for high-performance projects. Certification scope should be confirmed for the specific configuration. What affects the cost of Passive House windows? Cost depends on product series, size, glazing package, colour, hardware, certification requirements, project complexity, quantity, and documentation needs. Larger or custom units, triple glazing, and high-performance configurations usually require more planning than standard window orders. Who should request a Passive House spec package? Architects, builders, developers, energy consultants, and homeowners planning high-performance projects should request a spec package. It is especially useful when the project requires documented performance values, drawings, or certification review. ## Planning a Passive House or High-Performance Window Project? Get the product details, certification guidance, and technical support needed to choose the right Inline fiberglass windows or doors for your project. Tell us about your building type, location, product needs, and performance goals. Inline’s team can help you identify the right product path and documentation. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Installation & Lead-Time Process](https://inlinefiberglass.com/resources/installation-lead-time-process/) **Published:** June 14, 2026 **Author:** anthony@webhaven.ca **Content:** # Installation & Lead-Time Process Know what happens before, during, and after your window project. [ Read More ](#article) ## Know What Happens Before, During, and After Your Window Project Choosing new fiberglass windows or doors is a major project. The product matters, but so does the process: how your quote is reviewed, what information is needed, when measurements happen, how custom products move into production, and what to expect when delivery or installation is coordinated. Inline Fiberglass helps homeowners, builders, architects, and commercial project teams understand the next steps clearly. Whether you are replacing windows in a home, planning a custom build, or sourcing high-performance products for a larger project, this guide explains the typical window installation process and the factors that can affect your timeline. [ Ask a Timeline Question ](https://inlinefiberglass.com/contact/) [ Request a Free Estimate ](https://inlinefiberglass.com/request-a-quote/) ## What Happens After You Contact Inline? A good window or door project starts with clear information. You do not need to have every detail ready before reaching out, but the more context you can provide, the easier it is to guide you toward the right next step. The typical process includes: **1.** Project inquiry / **2.** Consultation and product guidance / **3.** Measurements, plans, or specification review / **4.** Quote preparation / **5.** Product selection and order confirmation / **6.** Manufacturing and production / **7.** Delivery or dealer coordination / **8.** Installation coordination / **9.** Warranty and service handoff. For residential visitors, this reduces uncertainty around the window replacement timeline. For builders and specifiers, it creates a clearer path for quoting, technical review, and project planning. [ Request a Free Estimate ](https://inlinefiberglass.com/request-a-quote/) ## Premium Windows Need Better Planning Fiberglass windows and doors are not one-size-fits-all products. Inline supports a range of window series, entrance doors, sliding patio doors, Passive House and high-performance products, commercial applications, custom sizing, glass options, colours, grilles, and hardware. That flexibility is valuable, but it also means the process should be handled carefully. A clear process helps avoid common problems such as: - Choosing the wrong window type for the opening - Underestimating custom product lead time - Missing product details needed for quoting - Assuming every installation path is the same - Delaying a project because measurements, drawings, or approvals are incomplete - Confusing sales inquiries, dealer inquiries, and service requests Inline’s website strategy identifies this page as a resource guide designed to reduce uncertainty, improve lead quality, and address communication concerns around follow-through. ## The Inline Fiberglass Project Process ## 1. Window type and operating style Start by sending the basic project details. This may include whether you need windows, entrance doors, sliding patio doors, Passive House products, commercial support, or help choosing. Helpful details include: Your name and contact information, Project location, Whether you are a homeowner, architect, builder, developer, dealer, or other contact, Product type needed, Approximate project timeline, Project details, plans, measurements, or photos if available. You can still reach out if you are not sure what you need. A clear inquiry helps Inline route your request to the right sales, technical, dealer, showroom, or service path. [ Start Your Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Step 2: Consultation and Product Guidance After your inquiry is reviewed, the next step is to understand the project goals. For homeowners, that may mean discussing comfort, energy efficiency, style, colour, ventilation, replacement timing, and whether a showroom visit would help. For builders and contractors, the discussion may focus on product fit, ordering requirements, rough openings, site schedule, documentation, and coordination. For architects and specifiers, the discussion may include product series, performance data, drawings, Passive House or high-performance requirements, and available technical documents. Inline’s Master Copy Brief recommends that the website route visitors by intent instead of sending every lead through the same path. Homeowners, architects, builders, developers, dealers, and existing service customers all need different next steps. ## Step 3: Measurements, Plans, or Technical Review Before a final quote or order can move forward, measurements and product requirements need to be reviewed. **Depending on the project, this may involve:** Site measurements, Builder-supplied dimensions, Architectural drawings, Window and door schedules, Rough opening details, Product series selection, Glass package requirements, Colour and finish choices, Hardware, grille, or screen selections, Certification or documentation needs. For replacement projects, accurate measurements are especially important. For custom homes, commercial buildings, and Passive House projects, plans and technical requirements may be needed earlier in the process. **Important note:** Installation responsibilities may vary by project type, location, and dealer relationship. Confirm whether your project is handled directly, through a dealer, through your contractor, or through another installation partner before relying on any project schedule. ## Step 4: Quote Preparation Once the right information is available, Inline can prepare the quote or help move your request toward the correct dealer, sales, or technical support path. **A quote may depend on:** Window or door type, Size and configuration, Glass package, Colour or custom finish, Hardware and grille selections, Quantity, Project location, Documentation requirements, Delivery or coordination needs, Installation path, where applicable. Custom fiberglass window lead time can vary because the product is made to fit the project, not pulled from a generic shelf. The safest approach is to ask for current timing when you submit your quote request. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Step 5: Product Selection and Order Confirmation After reviewing the quote, the next step is confirming product selections. This is where the project should be checked carefully before production begins. **Items to confirm may include:** Product series, Operation type, such as casement, awning, fixed, slider, single hung, double hung, tilt and turn, entrance door, or sliding patio door, Dimensions and quantities, Interior and exterior colour, Glass type, Grille pattern, if applicable, Hardware finish, Screen options, Performance or certification documentation, if required, Delivery, dealer, or installation coordination details This step matters because changes after order confirmation may affect pricing, production timing, or delivery. ## Step 6: Manufacturing and Production Inline Fiberglass is positioned around fiberglass-only focus and manufacturing control. The broader website copy strategy recommends using this as a key proof point, while avoiding unsupported claims unless approved. Your order may move through a production process that can include fiberglass lineal production, finishing, glass selection, frame and sash assembly, quality checks, and packaging. The exact process depends on the product and configuration. Because many Inline products are custom or project-specific, lead times are influenced by more than one factor. **Common lead-time factors include:** Product series, Standard vs. custom sizing, Glass package availability, Colour or coating requirements, Hardware options, Order quantity, Current production demand, Seasonal demand, Commercial or technical documentation needs, Delivery distance or coordination requirements. ## Step 7: Delivery or Dealer Coordination Once products are ready, the next step is delivery or pickup coordination. Depending on the project, this may involve Inline, an authorized dealer, a builder, a contractor, or another project partner. For out-of-market visitors, the dealer path should be made clear. The sitemap strategy recommends dealer-related content that distinguishes authorized dealer relationships from Inline-owned locations. For builders, architects, and commercial teams, delivery timing should be coordinated with the construction schedule. For homeowners, delivery and installation timing should be confirmed before preparing the home for installation day. ## Step 8: Installation Coordination The window installation process depends on the project type and the team responsible for installation. **For a replacement project, installation may include:** Confirming the installation date, Preparing access to the work area, Protecting nearby surfaces, Removing existing windows or doors, Installing the new units, Sealing and insulating the opening, Checking operation, Cleaning the immediate work area, Reviewing care, warranty, or service next steps. For new construction or commercial projects, installation may be coordinated through the builder, contractor, dealer, or project team. Product installation should follow the applicable product requirements, site conditions, and building envelope details. ## Step 9: Warranty and Service Handoff After delivery or installation, the project should have a clear support path. Serious buyers want to know who to contact if they have a service question, warranty question, hardware concern, or parts request later. Inline’s conversion architecture includes separate paths for quote requests, showroom bookings, spec requests, dealer inquiries, and service requests. That matters because support needs should not get buried in a general sales inbox. **Helpful post-project information may include:** Warranty documents, Product care guidance, Service request instructions, Dealer or installer contact details, where applicable, Photos or documentation needed for support requests, Product series and order information. [ View Warranty Information ](https://inlinefiberglass.com/resources/warranty/) [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) ## Typical Timeline: What Can Affect Your Project Schedule? There is no single window replacement timeline that applies to every project. A simple residential replacement may move differently than a custom home, Passive House project, or commercial building. ## Factors That Can Shorten the Timeline - Complete project details at the first inquiry - Accurate measurements or drawings - Clear product selection - Standard colours or options - Fast approval of quote and specifications - Early coordination with installer, dealer, builder, or architect ## Factors That Can Extend the Timeline - Custom sizes - Special glass packages and custom colours or finishes - Large quantity orders - Seasonal demand - Incomplete measurements or complex site conditions - Commercial documentation needs - Changes after quote or order review The best way to avoid surprises is to ask about current lead times early, especially if your project has a fixed construction schedule. ## For Homeowners: What to Expect If you are replacing windows or doors in your home, your main concerns are likely comfort, cost, appearance, timing, and whether the process will be disruptive. Inline can help you understand: - Which fiberglass window or door products may fit your home - Whether a showroom visit would help - What information is needed for a quote - How measurements are handled - What may affect lead time - How installation or dealer coordination works for your area - Where to go for warranty or service support [ Plan My Window Project ](https://inlinefiberglass.com/contact/) ## For Builders and Contractors: What to Expect If you are managing a construction or renovation project, the key issue is coordination. You need clear product details, realistic timing, and a reliable path for quote review. Inline can help with: - Product selection and custom sizing discussions - Quote requirements - Window and door schedules - Technical documents and Lead-time planning - Delivery or dealer coordination - Service and warranty routing [ Request Project Support ](https://inlinefiberglass.com/contact/) ## For Architects and Specifiers: What to Expect If you are specifying windows or doors for a high-performance, Passive House, custom residential, commercial, or institutional project, technical confidence matters. Inline can support requests for: - Product specs and Drawings and documentation - Product series guidance - Applicable certification details - Performance data, where available - Commercial or high-performance project coordination - Technical sales follow-up The Master Copy Brief recommends using careful certification language and confirming product-specific scope before stating that a product is certified. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## How to Prepare Before You Request a Quote You do not need everything finalized before contacting Inline, but these details help speed up the process: - Project address or city - Type of project: replacement, new build, commercial, Passive House, dealer inquiry, or service - Product interest: windows, entrance doors, sliding patio doors, or not sure - Number of units - Approximate sizes or drawings - Preferred style or operation type - Interior and exterior colour preferences - Timeline or target installation date - Photos of existing openings, if available - Plans or schedules, if available Tell us about your window or door project. Inline’s team will review your request and help you take the next step. [ Request a Free Estimate ](https://inlinefiberglass.com/request-a-quote/) ## Helpful Next Steps ## Explore Fiberglass Windows Compare Inline window series and find the right product type for your project. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Explore Fiberglass Doors Review entrance doors and sliding patio doors for residential and commercial applications. [ Explore Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) ## View Window Series Comparison Not sure which product fits? Compare window by use case, operation, and project type. [ View Comparison ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## Read Fiberglass Window Cost Guide Understand the factors that influence pricing before requesting a quote. [ View Cost Guide ](https://inlinefiberglass.com/resources/fiberglass-window-cost-guide/) ## View Warranty Information Learn how warranty and service support are routed after purchase. [ View Warranty Info ](https://inlinefiberglass.com/resources/warranty/) ## Request Product Specs For architects, builders, developers, and high-performance project teams. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Common Questions About Instalation & Lead Times Find clear answers to common questions about Inline fiberglass window and door product instalation and lead times. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) How long does a window replacement project take? The timeline depends on the product type, project size, measurements, quote approval, production schedule, delivery, and installation coordination. Custom fiberglass windows may require additional planning, especially for special sizes, colours, glass packages, or larger projects. Ask Inline for current lead-time guidance when you submit your quote request. What affects custom window lead time? Lead time can be affected by the window series, size, colour, glass package, hardware, order quantity, seasonal demand, production schedule, and whether the project needs technical documentation or commercial coordination. Does Inline install windows directly? Installation responsibilities may vary by project type, location, and dealer relationship. Inline should confirm the correct installation or dealer coordination path for your project before you rely on a schedule. What information do I need for a quote? Helpful information includes your contact details, project location, product type, number of windows or doors, approximate sizes, project timeline, photos, plans, or drawings. You can still contact Inline if you are not sure which product you need. When should measurements happen? Measurements should be confirmed before final order approval. For replacement projects, accurate opening measurements are critical. For builder, architectural, or commercial projects, drawings and window schedules may be reviewed earlier in the process. Can I visit the showroom before requesting a quote? Yes, a showroom visit can help you compare product types, finishes, glass options, and design details. Use the showroom booking CTA if you want to see products before finalizing your direction. What happens if there is a delay? Delays can happen when measurements, approvals, product selections, site conditions, or supply inputs change. The best way to reduce delays is to provide complete details early and confirm lead-time expectations before production or installation coordination begins. Do lead times change seasonally? They can. Demand may increase during certain seasons, especially when homeowners, builders, and renovation projects are trying to complete work before weather changes. Ask for current timing early if your project has a firm deadline. Can Inline support builders, architects, and commercial projects? Yes. Inline’s website strategy positions the company to support homeowners, architects, builders, developers, dealers, and commercial buyers with different paths for quote, product, specification, and project support. What should I do after installation? Keep your warranty information, product details, and service contacts. If you need support later, use the appropriate service request path and include photos, order details, product type, and a clear description of the issue. ## Ready to Start Your Window or Door Project? A clear process starts with a clear request. Tell Inline Fiberglass about your project, timeline, location, and product needs. The team will review your details and help you take the next step toward the right fiberglass window or door solution. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Fiberglass Window Cost Guide](https://inlinefiberglass.com/resources/fiberglass-window-cost-guide/) **Published:** June 14, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Window Cost Guide Learn how design choices, performance options, and project scope can influence overall cost. [ Read More ](#article) ## What affects the cost of fiberglass windows? Fiberglass window cost depends on the product series, window size, glass package, colour, hardware, project complexity, and whether your project needs custom sizing, high-performance glass, or Passive House-level documentation. Inline Fiberglass does not believe in one-size-fits-all pricing. A small fixed window, a custom colour casement window, and a large triple-glazed Passive House window are not the same project. The best way to understand your cost is to share your project details so our team can help you identify the right product path. [ Request a Free Estimate ](https://inlinefiberglass.com/request-a-quote/) ## Are fiberglass windows more expensive? Fiberglass windows usually cost more upfront than basic vinyl windows. That is the honest answer. The reason is simple: fiberglass is typically chosen for projects where long-term performance, durability, comfort, design flexibility, and lower maintenance matter more than finding the cheapest window available. For homeowners, that can mean better comfort, stronger frames, cleaner sightlines, and more confidence in the product over time. For architects, builders, and high-performance projects, it can mean better technical fit, more customization, and access to product documentation when needed. Inline Fiberglass is not positioned as a discount window company. The value is in a better-fit product for serious residential, commercial, custom, and high-performance projects. **Planning a window project?** Tell us what you’re replacing or building, and we’ll help you understand which fiberglass window options make sense. [ Request a Free Estimate ](https://inlinefiberglass.com/request-a-quote/) ## Why fiberglass windows are a premium investment Fiberglass is not just another frame material. It is the material Inline Fiberglass is built around. The Master Copy Brief identifies Inline’s strongest angle as fiberglass-only focus, vertically integrated manufacturing, premium performance, and residential/commercial versatility. ## Built for long-term performance Fiberglass windows are chosen for strength, dimensional stability, thermal performance, and durability. That matters in Canadian homes, custom builds, commercial projects, and energy-conscious renovations where the window needs to perform through changing seasons. ## Designed for comfort and efficiency Window cost is not only about the frame. Glass type, air sealing, U-value targets, solar gain, and installation conditions all affect the final result. A better-performing window may cost more upfront, but it can support a more comfortable building envelope. ## More options, more variables Custom sizes, specialty shapes, colour selections, grilles, hardware, triple glazing, and high-performance project needs can all affect cost. That flexibility is valuable, but it also means pricing needs to be project-specific. ## Product guidance, not guesswork The goal is not to push every visitor into the most expensive option. The goal is to match the product to the project. Inline’s website strategy emphasizes clear next steps, practical product guidance, and routing visitors to the right quote, showroom, product, or spec path. ## What affects fiberglass window cost? ## 1. Window type and operating style Different window styles have different frame designs, hardware needs, and performance requirements. Common fiberglass window types include: Fixed windows, Casement windows, Awning windows, Tilt and turn windows, Hopper windows, Horizontal sliders, Single hung windows, and Double hung windows. A fixed window is usually simpler than an operable window. Operable windows include additional hardware, sealing systems, movement, and testing requirements. Large-format or specialty windows may also require more engineering review. [ Compare Inline Window Series ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## 2. Window size Larger windows generally cost more because they require more frame material, larger glass units, more handling, and sometimes additional performance review. Size can also affect: Glass thickness, structural requirements, installation complexity, shipping and handling, and whether the window needs to be custom-built. For projects with multiple openings, a window schedule or drawings can help the team review the project more accurately. ## 3. Glass package Glass is one of the biggest cost variables. A standard double-pane glass package will not cost the same as a high-performance triple-pane package. Glass choices can affect thermal comfort, condensation resistance, solar heat gain, sound control, and energy performance. Cost may change based on: Double-pane vs. triple-pane glass, Low-E coating selection, gas fills, spacer system, tempered or laminated glass requirements, and Passive House or high-performance project needs. For Passive House or energy-focused projects, confirm the correct product, glass package, and documentation before making assumptions. The Master Copy Brief specifically warns against broad certification claims unless the product scope is verified. ## 4. Colour and finish Standard colour options are usually more straightforward than custom finishes. Custom colours, dark exterior finishes, special design requirements, and finish-matching needs can affect project cost and timeline. Colour decisions should be made early because they can affect manufacturing, approvals, and coordination with other exterior materials. [ Explore Finish Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) ## 5. Hardware and accessories Operable fiberglass windows need hardware that fits the product style and performance expectations. Depending on the window series, hardware and accessories may include operators, locks, hinges, handles, screens, grilles, and other details. These selections may seem small, but they influence the final price, appearance, and user experience. ## 6. Custom sizing and project complexity Custom fiberglass windows are priced differently from simple, standard replacement windows. Complexity increases when the project includes: Non-standard sizes, large openings, specialty configurations, multiple window types, architect drawings, commercial requirements, coordination with builders or contractors, and Passive House or high-performance documentation. The more specific your project requirements, the more important it is to request a project-based estimate rather than relying on generic online price ranges. ## 7. Installation conditions Installation can significantly affect total project cost. Inline should be careful not to imply direct installation unless confirmed for the visitor’s location or project type. The Master Copy Brief flags installation model and service-area routing as claims that need clarification. Installation-related cost factors may include: Replacement vs. new construction, existing frame condition, interior and exterior trim work, access to the opening, building height, water management details dealer, contractor, or builder coordination, and local code or project requirements. For some projects, the right next step may be a quote request, showroom visit, dealer referral, or technical review. ## Fiberglass window cost vs. vinyl, wood, and aluminum The cheapest window is not always the best value. The right window is the one that fits the project, performs properly, and supports the building’s long-term comfort, appearance, and durability. ## Fiberglass vs. vinyl window cost Vinyl windows are often less expensive upfront. For budget-driven replacements, that can make vinyl appealing. Fiberglass is typically selected when the buyer wants a stronger, more stable, longer-term window material. ## Fiberglass vs. wood window cost Wood windows can be premium and attractive, but they may require more maintenance over time. Fiberglass is often chosen by buyers who want a clean, durable window with strong performance and less upkeep than traditional wood. ## Fiberglass vs. aluminum window cost Aluminum can suit some modern and commercial applications, but it is highly conductive unless thermally broken. Fiberglass is often chosen when thermal performance and frame stability are priorities. ## Fiberglass windows cost in Toronto and the GTA For Toronto and GTA projects, fiberglass window cost can vary based on home age, opening size, replacement conditions, product selection, and whether the project is handled through Inline, a dealer, a contractor, or a builder. Older homes may require more review before quoting because existing openings, trim, insulation, or water management details can affect the final scope. Custom homes, commercial buildings, and Passive House projects often need more detailed product and specification support. The best starting point is to send your project location, photos, rough measurements, and project goals. [ Book a Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) ## What affects Passive House window cost? Passive House window cost is usually higher than a standard window project because the product selection is more technical. Cost may be affected by: Certified or high-performance product requirements, Triple-pane glass packages, Airtightness needs, U-value and solar heat gain targets, Window size and orientation, Drawings and documentation, Architect, builder, or energy consultant coordination, Project-specific performance confirmation, Select Inline products are designed for high-performance building needs. Contact Inline to confirm the right product, certification details, and documentation for your project. This safer claim language follows the brief’s governance rules for Passive House and certification-related copy. [ Passive House Window Support ](https://inlinefiberglass.com/contact/) ## How to get a accurate fiberglass window estimate ## Step 1: Tell us about your project Share the basics: your name, project location, product type, timeline, and whether this is a replacement, new build, commercial, or high-performance project. ## Step 2: Send photos, measurements, or drawings You do not need to have everything perfect. Photos, rough sizes, drawings, or a window schedule can help the team understand the project faster. ## Step 3: Get product guidance Inline can help route you toward the right window series, glass package, colour options, technical documents, dealer path, showroom visit, or next quote step. ## Common Questions About Fiberglass Window Cost Find clear answers to common questions about Inline fiberglass windows cost, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact/) How much do fiberglass windows cost? Fiberglass window cost depends on window type, size, glass package, colour, hardware, installation conditions, and project complexity. Because Inline works with a range of residential, commercial, custom, and high-performance projects, the most accurate answer comes from a project-specific estimate. Are fiberglass windows more expensive than vinyl? Usually, yes. Fiberglass windows typically cost more upfront than basic vinyl windows. They are generally chosen for strength, durability, thermal performance, design flexibility, and long-term value rather than lowest initial price. What affects fiberglass window cost the most? The biggest cost factors are usually window size, operating style, glass package, custom requirements, colour/finish choices, hardware, and installation complexity. Passive House or commercial documentation needs can also affect the quote process. Do custom fiberglass windows cost more? Custom windows often cost more than standard configurations because they require project-specific sizing, review, manufacturing, and coordination. Custom sizing, specialty colours, large openings, and special glass requirements can all affect price. Do triple-pane fiberglass windows cost more? Yes. Triple-pane glass packages usually cost more than standard double-pane glass packages. They may be worth considering when comfort, energy performance, condensation resistance, or high-performance building goals are priorities. What affects Passive House window cost? Passive House window cost may be affected by certified product requirements, triple glazing, airtightness needs, performance targets, documentation, and coordination with architects, builders, or energy consultants. Contact Inline to confirm the right product and documentation for your project. Can I get a quote without exact measurements? Yes. You can start with rough measurements, photos, drawings, or a description of your project. More accurate details help the team review your request more efficiently, but you do not need to have everything finalized before reaching out. Does Inline install fiberglass windows? Installation may depend on your location, project type, and whether the project is handled directly, through a dealer, or through your builder/contractor. Contact Inline with your project location and the team can help route you to the right next step. Are fiberglass windows worth the cost? They can be, especially for projects where long-term durability, comfort, thermal performance, clean design, and reduced maintenance matter. If your only goal is the lowest upfront price, fiberglass may not be the right fit. If your goal is long-term performance and a premium product path, fiberglass is worth considering. ## Get a project-specific fiberglass window estimate Generic price ranges can only take you so far. Your actual fiberglass window cost depends on the product, size, glass, colour, hardware, installation conditions, and project goals. Send Inline Fiberglass your project details and we’ll help you take the next step. [ Talk to a Specialist ](#) [ Request a Free Quote ](#form) --- ### [Fiberglass vs Wood Windows](https://inlinefiberglass.com/resources/fiberglass-vs-wood-windows/) **Published:** June 22, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass vs Wood Windows Compare Thermal Performance, Strength, Durability, and Design Flexibility [ Read More ](#article) ## Fiberglass vs Wood Windows: Premium Design Without the Ongoing Maintenance Wood windows have a classic look. For many custom homes and renovations, that warmth is part of the appeal. But wood also comes with maintenance, moisture concerns, and long-term upkeep that not every homeowner, builder, or architect wants to manage. Fiberglass windows offer a practical alternative. They support clean design, strong thermal performance, dimensional stability, and lower maintenance while still fitting premium residential, commercial, and high-performance projects. **Short Verdict:** Choose wood if natural material authenticity is the top priority and ongoing maintenance is acceptable. Choose fiberglass if you want a premium, durable, energy-efficient window frame built for long-term performance with less upkeep. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Fiberglass vs Wood Windows at a Glance | Category | Fiberglass Windows | Wood Windows | |---|---|---| | Appearance | Clean, modern, customizable finishes | Traditional, natural warmth | | Maintenance | Lower maintenance; no routine repainting or refinishing in the same way as wood | Requires ongoing care, painting, staining, and protection | | Moisture Resistance | Not prone to rot like natural wood | Can be vulnerable to moisture, swelling, and decay if not maintained | | Dimensional Stability | Designed to stay stable through temperature changes | Can expand, contract, or shift with humidity and moisture | | Energy Efficiency | Strong fit for energy-efficient and high-performance projects | Can perform well, depending on construction and glazing | | Design Flexibility | Works with modern, traditional, commercial, and custom projects | Strong fit for heritage, traditional, and natural interior styles | | Long-Term Practicality | Strong choice for buyers who want premium performance with less upkeep | Strong choice for buyers who prioritize natural wood and accept maintenance | ## Quick Answer: Are Fiberglass Windows Better Than Wood Windows? Fiberglass is often the better choice when long-term durability, lower maintenance, and stable performance matter more than having a natural wood frame. Wood remains attractive for certain traditional or heritage-style projects. But for many premium homes, custom builds, commercial spaces, and energy-conscious renovations, fiberglass delivers a more practical balance: the look and design flexibility buyers expect from a premium window, without the maintenance burden that comes with wood. Inline Fiberglass focuses on fiberglass windows and doors, with product paths for homeowners, architects, builders, developers, dealers, and commercial buyers. That aligns with the project strategy of positioning Inline as a premium fiberglass manufacturer rather than a generic window replacement company. [ Talk to a Product Specialist ](tel:1-866-566-5656) ## How Do The Two Compare ## 1. Built for durability Wood windows are popular because they feel natural, traditional, and warm. That matters in many homes, especially where interior wood trim, heritage details, or classic architecture are part of the design. Fiberglass takes a different approach. It is not trying to be raw wood. It gives homeowners, builders, and architects a premium frame material that works across modern, transitional, and traditional designs. With the right colour, grille, glass, and hardware choices, fiberglass can support a clean architectural look without asking the owner to maintain a natural wood frame. **Best fit for wood:** Projects where natural material character is non-negotiable. **Best fit for fiberglass:** Projects where clean design, colour flexibility, durability, and lower maintenance matter. ## 2. Maintenance: This Is Where Fiberglass Pulls Ahead Wood windows need care. Depending on the exposure, finish, and climate, they may need repainting, staining, sealing, or repair over time. If that maintenance is skipped, wood can become vulnerable to moisture and visible wear. Fiberglass windows are built for buyers who want a premium product without that same level of upkeep. They are a strong option for homeowners who want long-term curb appeal, builders who want fewer service concerns, and commercial teams that want durable exterior materials. This is the practical reason many buyers compare fiberglass vs wood windows in the first place. They like the look of wood, but they do not want the maintenance cycle. ## 3. Moisture and Rot: Fiberglass Avoids a Common Wood Weakness Wood is an organic material. When it is exposed to moisture and not properly protected, it can swell, soften, crack, or rot. Fiberglass does not rot like wood. That makes it a strong fit for climates where windows face rain, snow, humidity, freeze-thaw cycles, and sun exposure. For buyers investing in premium windows, this matters because window replacement is not something they want to repeat sooner than necessary. **Plain-English takeaway:** Wood can perform well when it is protected and maintained. Fiberglass is more forgiving because the frame material itself is not vulnerable to rot in the same way. ## 4. Stability: Fiberglass Is Built for Changing Temperatures Windows deal with temperature swings, sunlight, humidity, wind, and seasonal change. Frame stability matters because movement can affect long-term fit, operation, seals, and comfort. Fiberglass is valued because it is strong and dimensionally stable. Inline’s content strategy repeatedly connects fiberglass to strength, durability, thermal performance, lower maintenance, and long-term value. For architects and builders, that stability also supports confidence when selecting windows for custom homes, high-performance envelopes, commercial projects, and buildings where product consistency matters. ## 5. Energy Efficiency: Frame Material Is Only Part of the Story Wood and fiberglass can both be used in energy-efficient window systems. The final performance depends on the full window assembly, including frame design, glass package, spacer, seals, installation, and product configuration. Fiberglass is a strong material choice for energy-conscious buyers because it supports durable, thermally efficient window systems without relying on a high-maintenance natural frame. For high-performance or Passive House-oriented projects, buyers should confirm product-specific data, documentation, and certification scope before making a specification decision. **Safe specification note:** Select Inline products are designed for high-performance building needs. Contact Inline to confirm the right product, certification details, and documentation for your project. ## 6. Cost and Long-Term Value: Wood Can Be Premium, But Maintenance Adds Up Wood windows are typically chosen for aesthetic reasons, not because they are the lowest-maintenance option. The upfront cost may be only part of the decision. Over time, owners may also need to consider repainting, refinishing, repairs, and protection from moisture. Fiberglass windows are also a premium product, but the value case is different. The buyer is investing in durability, comfort, design flexibility, and reduced maintenance over time. **Simple buyer framing:** Wood may make sense when natural material character is worth the upkeep. Fiberglass makes sense when the goal is premium performance without building a maintenance routine around the window frame. ## Fiberglass Windows Are a Strong Fit For: ## Premium homeowners You want windows that look refined, perform well, and do not require the same upkeep as wood. ## Custom-home builders You need a durable, clean-looking window system that can support design flexibility and long-term client satisfaction. ## Architects and specifiers You want frame material stability, product documentation, and technical support for residential, commercial, or high-performance projects. ## Renovators You are replacing older windows and want a premium upgrade that improves comfort, curb appeal, and long-term practicality. ## Commercial and multi-unit projects You need a window solution that balances performance, durability, technical documentation, and consistent product support. ## Explore Fiberglass Window Options Inline offers fiberglass window systems for different project needs, including modern homes, traditional homes, commercial buildings, ventilation needs, large glass openings, and high-performance applications. Popular product paths to explore: - [ Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) - [ Casement Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-casement/) - [ Awning Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-awning/) - [ Fixed and Strip Windows ](https://inlinefiberglass.com/products/fiberglass-windows/400-series-strip-fixed/) - [ Tilt & Turn Windows ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) - [ Tilt & Turn Windows ](https://inlinefiberglass.com/products/fiberglass-windows/300-series-tilt-turn/) - [ Single Hung Windows ](https://inlinefiberglass.com/products/fiberglass-windows/850-series-single-hung/) - [ Double Hung Windows ](https://inlinefiberglass.com/products/fiberglass-windows/900-series-double-hung/) ## Common Questions About About Fiberglass vs Wood Windows Find clear answers to common questions about fiberglass windows vs Wood windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Are fiberglass windows better than wood windows? Fiberglass is often better for buyers who want lower maintenance, durability, and dimensional stability. Wood may still be preferred when natural material authenticity is the top priority. Do fiberglass windows look as good as wood windows? That depends on the design goal. Wood offers natural grain and warmth. Fiberglass offers clean lines, colour flexibility, and a premium architectural appearance without the same upkeep. Are fiberglass windows lower maintenance than wood? Yes. Fiberglass windows do not require the same regular painting, staining, sealing, or moisture protection that wood windows may need over time. Do wood windows last longer than fiberglass windows? Longevity depends on product quality, exposure, maintenance, installation, and use. Wood can last when maintained properly, but fiberglass is generally chosen because it is durable and less maintenance-intensive. Are fiberglass windows energy efficient? Fiberglass can support energy-efficient window systems, but performance depends on the full window assembly, including frame design, glazing, spacers, seals, and installation. Ask Inline for product-specific performance details. Are fiberglass windows good for custom homes? Yes. Fiberglass is a strong fit for many custom homes because it supports clean design, durability, energy-conscious construction, and custom project requirements. Can fiberglass windows be used in commercial projects? Yes, fiberglass windows can be a strong fit for commercial and developer-led projects where durability, thermal performance, technical documentation, and long-term value matter. Confirm product fit with Inline’s team. Should I replace wood windows with fiberglass? Fiberglass is worth considering if your current wood windows are drafty, worn, high-maintenance, or vulnerable to moisture. It is especially useful when you want a premium replacement without committing to another wood maintenance cycle. ## Get the Look, Comfort, and Performance Your Project Needs Wood windows have their place. But if you want a premium window material that is durable, energy-conscious, design-flexible, and easier to maintain, fiberglass is a practical choice. Tell Inline about your project and the team will help you understand your options. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Fiberglass VS Vinyl Windows](https://inlinefiberglass.com/resources/fiberglass-vs-vinyl-windows/) **Published:** June 13, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass vs Vinyl Windows Which Window Material Makes More Sense for Your Home? [ Read More ](#article) ## Which Window Material Makes More Sense for Your Home? Vinyl windows are popular because they are widely available and often cost less upfront. Fiberglass windows are chosen by homeowners who want stronger frames, cleaner profiles, long-term durability, energy-efficient design, and lower maintenance over time. If you are comparing fiberglass vs vinyl windows, the right choice depends on your home, budget, project goals, and how long you want the windows to perform after installation. Inline Fiberglass helps homeowners compare window materials clearly so they can choose the right product path before requesting a quote. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Fiberglass vs Vinyl Windows at a Glance | Comparison Point | Fiberglass Windows | Vinyl Windows | |---|---|---| | Upfront Cost | Usually higher | Usually lower | | Long-Term Value | Strong fit for premium, long-term projects | Strong fit for budget-sensitive replacements | | Frame Strength | Strong, rigid fiberglass construction | Less rigid than fiberglass | | Dimensional Stability | Designed to resist warping, swelling, and movement | Can be more affected by temperature changes | | Maintenance | Low maintenance | Low maintenance | | Appearance | Clean profiles and premium finish options | Often more limited in premium design applications | | Energy Efficiency | Supports energy-efficient window design | Can support energy-efficient windows depending on product quality | | Best Fit | Custom homes, premium replacements, high-performance projects, long-term upgrades | Basic replacement projects and tighter budgets | ## Why Homeowners Compare Fiberglass and Vinyl Most homeowners comparing fiberglass and vinyl are trying to answer one practical question: **Is fiberglass worth the higher price?** The honest answer is that fiberglass is not the right choice for every project. If the lowest initial cost is the main priority, vinyl may be the more practical option. But if you are replacing windows in a home you plan to keep, building a custom home, upgrading for comfort, or trying to avoid another replacement cycle sooner than expected, fiberglass deserves serious consideration. Fiberglass is often chosen because it supports: - Stronger frame construction - Long-term dimensional stability - Energy-efficient window design - Clean sightlines and modern profiles - Durable finishes - Lower maintenance - Residential and high-performance project needs [ Talk to a Product Specialist ](tel:1-866-566-5656) ## What Are Vinyl Windows? Vinyl windows are made from PVC, a plastic-based material used widely in residential window replacement. They are common because they are generally affordable, available in many standard sizes, and require limited maintenance. For many homeowners, vinyl windows can be a reasonable choice when the project is simple, budget-driven, and focused mainly on replacing old windows at a lower initial cost. However, vinyl is not always the best fit when homeowners want a more premium finish, larger glass areas, slimmer-looking frames, stronger structural performance, or better long-term stability. ## What Are Fiberglass Windows? Fiberglass windows are made from reinforced fiberglass material. Inline Fiberglass focuses specifically on fiberglass windows and doors, which means the product knowledge, design, manufacturing process, and support are built around the strengths of fiberglass. Fiberglass is chosen for projects where windows need to support long-term comfort, durability, thermal performance, and design flexibility. It is especially useful for homeowners who want a window material that feels like a long-term investment rather than a basic replacement product. Inline’s positioning is based on fiberglass-only focus, long-term performance, product breadth, technical credibility, and clear next steps for different visitor types. ## Is Fiberglass Worth the Higher Price Compared With Vinyl? Fiberglass windows usually cost more than vinyl windows. That price difference is exactly why this comparison matters. The better question is not, “Which window is cheaper?” The better question is: ### Which window material better matches the home, project, and expected lifespan of the upgrade? Fiberglass may be worth the higher price when: - You want a premium window replacement - You plan to stay in the home long-term - You care about comfort and energy performance - You want durable frames with clean design - You want more confidence in long-term stability - You are building or renovating a custom home - You want a product path that feels more permanent than basic replacement vinyl Vinyl may make more sense when: - Lowest upfront cost is the top priority - The project is a basic rental or resale update - The home does not require premium detailing - The window sizes and styles are standard - Long-term performance is less important than initial budget **Bottom line:** vinyl can solve a short-term replacement need. Fiberglass is usually the stronger fit for homeowners who want a premium, longer-term window upgrade. ## Comfort, Durability, and Long-Term Performance Windows affect more than appearance. They influence comfort, energy use, condensation risk, maintenance, and how your home feels throughout the year. Fiberglass windows are designed for projects where those long-term factors matter. ## Strength and Stability Fiberglass frames are strong and stable, which helps support long-term window performance. This is especially important in climates where windows are exposed to seasonal temperature changes, moisture, sun, and repeated use. ## Energy-Efficient Design Both vinyl and fiberglass windows can be made with energy-efficient glass packages. The difference is that fiberglass provides a strong, stable frame material. For homeowners, that can mean more confidence in the window system over time. ## Lower Maintenance Fiberglass and vinyl are both lower-maintenance alternatives to wood. The difference is that fiberglass offers that lower maintenance in a more premium, structurally stable material. ## Design Flexibility Fiberglass can support clean profiles, modern design, larger glass areas, and premium finish options. For homeowners who care about architecture, curb appeal, or custom-home aesthetics, this can be a major reason to choose fiberglass over vinyl. ## When to Choose Fiberglass Windows Fiberglass is usually the better fit if your project includes one or more of these goals: ## You Are Planning a Premium Window Replacement If you are upgrading your main home, fiberglass gives you a stronger product path than basic vinyl replacement. ## You Want Long-Term Durability Fiberglass is designed for long-term performance, making it a strong option when you want windows that support comfort and stability for years. ## You Care About Clean Design Fiberglass windows can support a more refined look than many standard vinyl options, especially for homeowners who want clean sightlines and a more premium finish. ## You Are Building or Renovating a Custom Home Custom homes usually need more flexibility than basic replacement projects. Fiberglass is well suited to that level of investment. ## You Want Better Support Before You Choose Inline helps homeowners understand product options, compare window types, and request the right quote path before making a decision. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Why Homeowners Compare Fiberglass and Vinyl Most homeowners comparing fiberglass and vinyl are trying to answer one practical question: **Is fiberglass worth the higher price?** The honest answer is that fiberglass is not the right choice for every project. If the lowest initial cost is the main priority, vinyl may be the more practical option. But if you are replacing windows in a home you plan to keep, building a custom home, upgrading for comfort, or trying to avoid another replacement cycle sooner than expected, fiberglass deserves serious consideration. Fiberglass is often chosen because it supports: - Stronger frame construction - Long-term dimensional stability - Energy-efficient window design - Clean sightlines and modern profiles - Durable finishes - Lower maintenance - Residential and high-performance project needs [ Talk to a Product Specialist ](tel:1-866-566-5656) ## When Vinyl Windows May Be Enough Vinyl may be enough if your project is simple and budget is the main concern. Vinyl can be a practical choice for: - Basic replacement projects - Rental properties - Shorter-term ownership plans - Lower-budget upgrades - Standard window openings - Projects where premium appearance is less important That does not make vinyl a bad product. It means vinyl and fiberglass serve different buyer needs. The mistake is choosing vinyl only because it is cheaper upfront, then realizing later that the project needed better performance, stronger frames, or a more premium look. ## Explore Inline Fiberglass Window Options Inline Fiberglass manufactures fiberglass window systems for different project needs, styles, and performance goals. Depending on your home and design preferences, your project may include: - Casement windows - Awning windows - Fixed windows - Tilt and turn windows - Slider windows - Single hung windows - Double hung windows - High-performance window options If you are not sure which window type is right for your home, Inline can help you compare product paths based on ventilation, glass size, style, location, comfort goals, and quote requirements. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Not Sure If Fiberglass Is Worth It? You do not need to make that decision from a comparison page alone. Tell Inline about your home, window goals, location, and timeline. The team can help you understand whether fiberglass makes sense for your project, which window styles may fit, and what information is needed for the next step. **Helpful details to include:** - Project location - Replacement or new construction - Approximate number of windows - Preferred window styles - Photos or drawings if available - Timeline - Comfort, design, or performance goals [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About About Fiberglass vs Vinyl Windows Find clear answers to common questions about fiberglass windows vs vinyl windows, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Are fiberglass windows better than vinyl windows? Fiberglass windows are usually better for homeowners who care about long-term durability, frame strength, design flexibility, and premium performance. Vinyl windows may be better for budget-focused projects where lower upfront cost is the main priority. Are fiberglass windows more expensive than vinyl? Yes. Fiberglass windows typically cost more than vinyl windows. The higher cost reflects the material, construction, performance potential, and premium positioning. For homeowners planning a long-term upgrade, that higher upfront cost may be easier to justify. Are vinyl windows a bad choice? No. Vinyl windows can be a practical choice for basic replacement projects, rental properties, or lower-budget upgrades. They are not always the best fit for homeowners who want a more premium product, cleaner design, stronger frames, or better long-term stability. Do fiberglass windows require a lot of maintenance? Fiberglass windows are considered low maintenance. They do not need the same maintenance approach as wood windows, and they are designed for long-term use. Exact care requirements should always be reviewed with the product documentation. Are fiberglass windows energy efficient? Fiberglass windows can support energy-efficient window design, especially when paired with the right glass package and product configuration. Energy performance should be confirmed by product series, glass package, ratings, and project requirements. Which is better for a custom home: fiberglass or vinyl? Fiberglass is usually the stronger fit for custom homes because it supports premium design, clean profiles, durability, and long-term performance. Vinyl may work for simpler projects, but many custom-home buyers prefer fiberglass when appearance and performance matter. Do fiberglass windows look better than vinyl? That depends on the product, but fiberglass is often chosen for a more premium appearance, cleaner sightlines, and stronger design flexibility. Homeowners comparing materials should look at product photos, frame profiles, finish options, and installed examples before deciding. How do I know whether fiberglass is right for my home? Start by comparing your goals. If you want the lowest upfront cost, vinyl may be enough. If you want a long-term upgrade with strength, durability, energy-efficient design, and a premium look, fiberglass is likely worth considering. Inline can help you review your project and choose the right next step. ## Compare Your Options Before You Replace Your Windows Choosing between fiberglass and vinyl is easier when you know what matters most: upfront cost, long-term value, comfort, appearance, durability, or performance. If you are considering fiberglass windows for your home, Inline can help you understand your options and take the next step toward a quote. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [FAQ](https://inlinefiberglass.com/resources/faq/) **Published:** June 14, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Windows and Doors FAQ Have questions about fiberglass windows, entrance doors, sliding patio doors, quotes, technical documents, warranty, service, or dealer support? Start here. [ Read More ](#article) ## General Inline Fiberglass Questions What does Inline Fiberglass make? Inline Fiberglass makes fiberglass windows, fiberglass entrance doors, and fiberglass sliding patio doors for residential, commercial, architectural, high-performance, and dealer-supported projects. The product range includes multiple fiberglass window series, entrance doors, sliding patio doors, glass and finish options, and products used in high-performance building applications. What makes Inline different from a regular window company? Inline is focused on fiberglass windows and doors. Fiberglass is not a side product line for the company. That focus helps Inline provide stronger product guidance, technical support, and window and door systems designed around the strengths of fiberglass. Inline should be positioned around fiberglass-only focus, manufacturing control, product breadth, technical credibility, and clear next steps, rather than generic “quality windows” language. Do you work with homeowners? Yes. Homeowners can contact Inline to ask about fiberglass window and door options, request a quote, visit the showroom if appropriate, or get help understanding the right product path. For some locations or project types, availability and next steps may involve an authorized dealer, contractor, or project partner. Inline can help route the inquiry. Do you work with architects, builders, and developers? Yes. Inline supports architects, builders, contractors, developers, and commercial project teams with product information, technical documents, product selection support, and project inquiries. For specification work, contact Inline to confirm the right product, documentation, and certification details for the project. Do you sell through dealers? Yes. Inline works with an authorized dealer network. Dealers may support regional availability, local product guidance, and project coordination depending on the market. If you are unsure whether to contact Inline directly or a dealer, start with the dealer locator or contact Inline for routing support. ## Fiberglass Window Questions What are fiberglass windows? Fiberglass windows use fiberglass frames instead of vinyl, aluminum, or wood. Fiberglass is valued for strength, dimensional stability, durability, energy performance potential, and clean design flexibility. For buyers, that means fiberglass is often a strong fit when long-term comfort, durability, and performance matter. Are fiberglass windows energy efficient? Fiberglass windows can support strong energy performance because fiberglass is stable and less conductive than aluminum. Actual energy performance depends on the full window system, including the frame, glass package, spacers, air sealing, size, installation conditions, and product configuration. Contact Inline to confirm product-specific performance data for your project. What fiberglass window styles are available? Inline’s fiberglass window options include multiple product types and series, such as tilt and turn, fixed, casement, awning, hopper, horizontal slider, single hung, and double hung windows. The best choice depends on the project, opening size, ventilation needs, design style, cleaning access, energy goals, and whether the project is residential or commercial. Which window series should I choose? The right series depends on how the window needs to operate and what the project requires. Tilt and turn windows may fit projects that need flexible ventilation and inward operation. Fixed and strip windows may fit larger glass areas or modern architectural designs. Casement, awning, hopper, slider, single hung, and double hung windows each serve different design and operation needs. For a direct recommendation, send Inline your project details. Are fiberglass windows better than vinyl, aluminum, or wood? Fiberglass has different strengths than vinyl, aluminum, and wood. It is often chosen for strength, long-term stability, energy performance potential, lower maintenance needs, and design flexibility. The best material still depends on the project. For example, homeowners may prioritize comfort and durability, while architects may prioritize performance data, frame dimensions, and documentation. Can fiberglass windows be customized? Inline offers product options for glass, colours, grilles, hardware, and configurations. Custom availability can depend on the product series, project requirements, size, finish, and technical constraints. The safest next step is to send your project details and confirm what is available for your specific product and opening. ## Fiberglass Door Questions What door products does Inline offer? Inline offers fiberglass entrance doors and fiberglass sliding patio doors. Entrance doors are typically used for front entries and other exterior access points where design, durability, and curb appeal matter. Sliding patio doors are used for larger openings, patio access, modern homes, and high-performance project needs. What is the difference between entrance doors and sliding patio doors? Entrance doors are hinged door systems often used for front entries, side entries, and main access points. They can support design features such as sidelites, transoms, glass options, and colour choices. Sliding patio doors are designed for wide openings and smooth access to patios, decks, and outdoor spaces. They are often used when the project needs more glass, more light, or a larger opening. Are fiberglass doors energy efficient? Fiberglass doors can support strong energy performance, but actual performance depends on the door system, glass package, threshold, weather sealing, configuration, and installation conditions. For high-performance or Passive House project needs, contact Inline to confirm product-specific documentation and suitability. Can I choose custom colours or glass for doors? Inline offers design options for door products, including colour and glass choices. Availability depends on the product, configuration, and project requirements. For exact options, request a quote or speak with Inline about your preferred style, colour, glass, and opening details. ## Quote and Pricing Questions How do I request a quote? You can request a quote by submitting your project details through the quote form. Include your name, contact information, project location, product needs, project timeline, and a short description of what you are planning. If you have drawings, plans, measurements, or photos, include them if the form allows uploads. What information should I provide for a quote? Helpful quote details include: - Project location - Product needed: windows, entrance doors, sliding doors, Passive House products, commercial products, or “not sure” - Approximate sizes or drawings - Project type: replacement, new build, renovation, commercial, or specification - Preferred timeline - Glass, colour, grille, or hardware preferences - Photos or plans, if available Do I need exact measurements before contacting Inline? No. You can contact Inline before you have every detail finalized. Clear measurements, drawings, or photos are helpful, but the first step can simply be explaining the project and what you need. Inline can help identify the right product path and explain what information is needed next. How much do fiberglass windows cost? Fiberglass window cost depends on the product series, size, glass package, colour, hardware, grille options, quantity, project complexity, installation path, and performance requirements. Because Inline products are project-based, the most accurate way to get pricing is to request a quote with your project details. Are fiberglass windows more expensive than vinyl windows? Fiberglass windows often cost more than basic vinyl windows because they are built for stronger long-term performance, durability, and design flexibility. The right comparison should consider more than upfront price. Comfort, energy performance, durability, maintenance, design goals, and project fit all matter. For a realistic comparison, review the material guide or request a project-specific quote. What happens after I submit a quote request? Inline will review your project details and contact you about the next step. Depending on the request, the next step may include product guidance, clarification questions, technical document sharing, showroom discussion, dealer routing, or a project quote path. ## Installation and Project Process Questions Does Inline install windows and doors? Installation responsibilities can vary by project type, location, dealer involvement, and contractor arrangement. Do not assume every project is installed directly by Inline. Contact Inline or your authorized dealer to confirm the right installation path for your project. How long does a window or door project take? Project timing can depend on product selection, quote review, measurements, customization, technical requirements, production timing, delivery, installation coordination, and seasonal demand. For the most accurate answer, contact Inline with your product needs and project timeline. How far ahead should I start planning? Start as early as possible, especially for custom homes, commercial projects, Passive House projects, large orders, or projects requiring technical documentation. Early planning gives your team more time to confirm products, sizes, glass packages, colours, performance requirements, and project coordination needs. Can Inline help me choose the right product? Yes. Inline can help homeowners, builders, architects, developers, and dealers understand which fiberglass window or door product may fit the project. The more detail you provide about your opening, goals, location, project type, and timeline, the easier it is to recommend a useful next step. ## Passive House and Technical Questions Are Inline products Passive House or PHIUS certified? Select Inline products may support Passive House or PHIUS-related project needs, but certification details should always be confirmed by product and configuration. Do not assume every Inline product is certified for every Passive House project. Contact Inline to confirm the correct product, certification details, and technical documentation for your project. Can I request product specs or drawings? Yes. Architects, builders, developers, contractors, and project teams can request product specs, drawings, and technical documents where available. Use the Technical Downloads page or submit a spec support request if you need help locating the right document. Do you provide documents for architects and specifiers? Yes. Inline supports specification-stage visitors with product data, technical documents, product guidance, certification context, and project support. For project-specific certification or performance questions, contact Inline directly so the correct product and documentation can be confirmed. Can Inline support commercial or high-performance projects? Yes. Inline supports residential, commercial, architectural, and high-performance project needs with fiberglass window and door products. For commercial or high-performance projects, contact Inline early to discuss product fit, documentation, technical requirements, and project support. ## Warranty, Service, and Parts Questions What warranty does Inline offer? Warranty coverage can depend on the product, project, purchase details, and warranty terms. Review the official warranty page and contact Inline if you need help confirming what applies to your product. How do I request service or parts? Use the Service Request page to submit details about your service or parts need. Include your contact information, product details, project address, photos if available, and a clear description of the issue. This helps route your request to the right team and reduces back-and-forth. Who should I contact if I bought through a dealer? If your product was purchased through a dealer, start by contacting the dealer or use Inline’s service request path if you are unsure where the request should go. Provide as much detail as possible, including dealer name, project location, product type, photos, and order information if available. What should I include in a service request? Include: - Your name and contact information - Project address or product location - Product type - Approximate purchase or installation date, if known - Dealer or contractor name, if applicable - Photos of the product or concern - A clear description of the issue - Any order, invoice, or warranty information available ## Dealer and Availability Questions Where are Inline products available? Inline products are available through Inline and its authorized dealer network, depending on project location and product needs. Use the Dealer Locator to find a dealer or contact Inline if you are unsure which path applies. Can I visit the Inline showroom? Inline’s Toronto / Etobicoke showroom path should be used for visitors who want to see products, discuss options, or plan a local project. Confirm showroom details, hours, and appointment requirements before visiting. How do dealers contact Inline? Dealers and distributors can use the dealer partnership inquiry path to tell Inline about their market, business, product interest, and territory questions. Is Inline accepting new dealers? Dealer availability may depend on market coverage, product fit, territory, and business alignment. Submit a dealer inquiry so Inline can review your market and product interest. ## Still Have Questions? Whether you are replacing windows, planning a custom home, specifying a commercial project, requesting service, or exploring dealer opportunities, Inline can help route your question to the right next step. [ Talk to a Specialist ](tel:1-866-566-5656) [ Visit Our Showroom ](https://inlinefiberglass.com/book-showroom-visit/) --- ### [EPD Sustainability](https://inlinefiberglass.com/resources/epd-sustainability/) **Published:** June 14, 2026 **Author:** anthony@webhaven.ca **Content:** # EPD & Sustainability Resources Explore environmental product declarations, sustainability resources, and supporting documentation. [ Read More ](#article) ## Fiberglass Windows and Doors with Documented Environmental Performance. Inline Fiberglass supports architects, builders, commercial teams, and performance-focused homeowners with environmental documentation for fiberglass window and door projects. Our Environmental Product Declaration helps project teams review the life-cycle impact of Inline fiberglass products and make more informed decisions for sustainable, energy-efficient buildings. [ Download EPD ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request Documentation ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Environmental documentation for better building decisions Choosing windows and doors is not only about style or upfront cost. For high-performance homes, commercial buildings, Passive House projects, and green-building specifications, material selection affects long-term durability, energy performance, replacement cycles, and project documentation. Inline Fiberglass provides Environmental Product Declaration resources to help project teams evaluate fiberglass windows and doors with greater confidence. Use this page to access EPD information, understand what an EPD means, and connect with the Inline team for product-specific documentation. ## Download Inline Fiberglass EPD resources Choosing windows and doors is not only about style or upfront cost. For high-performance homes, commercial buildings, Passive House projects, and green-building specifications, material selection affects long-term durability, energy performance, replacement cycles, and project documentation. Inline Fiberglass provides Environmental Product Declaration resources to help project teams evaluate fiberglass windows and doors with greater confidence. Use this page to access EPD information, understand what an EPD means, and connect with the Inline team for product-specific documentation. ## Inline Fiberglass Environmental Product Declaration Use this document when reviewing project documentation, green-building requirements, product comparisons, or specification needs. [ Download EPD ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Need project-specific documentation? Not every product, configuration, or certification applies to every project in the same way. For the most accurate information, contact Inline to confirm the right documentation for your project. [ Request Documentation ](https://inlinefiberglass.com/resources/technical-spec-download/) ## What is an Environmental Product Declaration? An Environmental Product Declaration is a verified document that reports environmental impact data for a product. For windows and doors, an EPD can help project teams review factors such as material inputs, manufacturing impact, life-cycle considerations, and embodied carbon documentation. In practical terms, an EPD helps answer: - What environmental data is available for this product? - How can this product be documented for a green-building project? - What information can architects, builders, and developers use during specification? - How does the product support a more informed material selection process? For specifiers and commercial teams, EPD resources can support documentation workflows where transparent product data is required. ## How fiberglass supports long-term building performance Sustainability is not only about the material itself. It is also about how long a product performs, how well it supports the building envelope, and how often it may need to be replaced. Inline fiberglass windows and doors are designed for projects where durability, energy efficiency, comfort, and long-term performance matter. ## 1. Built for durability Fiberglass is valued for strength and dimensional stability. That matters in windows and doors because frames need to hold their shape through seasonal temperature changes, daily operation, and long-term exposure. A stable frame can help support consistent fit, reliable sealing, and long service life. ## 2. Designed for energy-efficient buildings Windows and doors are part of the building envelope. High-performance window and door systems can help reduce unwanted heat loss, improve comfort, and support more efficient buildings. For projects with stronger performance goals, Inline can help confirm which product series, glass options, and technical documents are most relevant. ## 3. Lower replacement frequency supports responsible material use A product that lasts longer can reduce the need for premature replacement. That matters for homeowners, builders, and commercial teams looking at long-term value rather than only initial purchase price. ## 4. Practical documentation for project teams Architects, builders, developers, and specifiers often need more than marketing claims. They need product data, EPD resources, performance information, and technical support. Inline’s EPD and related documentation help make that process clearer. ## Resources for architects, builders, and commercial teams Inline’s sustainability resources are most useful when paired with the right technical documentation. Depending on your project, you may also want to review: - Environmental Product Declaration resources - Product specifications and Technical drawings - Glass and glazing options - Certification details where applicable - Passive House or high-performance product information - Warranty information - Commercial project examples For specifiers and commercial teams, EPD resources can support documentation workflows where transparent product data is required. ## Sustainable fiberglass windows and doors for performance-focused projects Inline Fiberglass manufactures fiberglass windows, entrance doors, and sliding patio doors for residential, commercial, and high-performance building needs. Relevant product paths include: ## Fiberglass Windows Explore fiberglass window systems designed for comfort, durability, energy efficiency, and clean design. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Fiberglass Doors Review fiberglass entrance doors and sliding patio doors built for performance, durability, and design flexibility. [ Explore Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) ## Passive House & High-Performance Products Find product information and documentation for projects with more demanding performance goals. [ High-Performance Products ](https://inlinefiberglass.com/products/passive-house-high-performance/) ## A note on certification and product-specific documentation EPD, performance, and certification details can vary by product series, configuration, glazing package, and project requirement. Before using documentation for a specification, submission, or certification pathway, contact Inline Fiberglass to confirm the correct product data for your project. ## Common Questions About EPD and Sustainability Find clear answers to common questions about EPD and Sustainability. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What is an EPD for windows? An EPD, or Environmental Product Declaration, is a verified document that reports environmental impact information for a product. For windows, it can help architects, builders, developers, and project teams review environmental data during product selection and specification. Does Inline Fiberglass have an EPD? Yes. Inline Fiberglass provides EPD resources for project teams reviewing environmental documentation for fiberglass window and door products. Download the available EPD or contact Inline for product-specific documentation. How do fiberglass windows support sustainable building goals? Fiberglass windows can support sustainable building goals through durability, dimensional stability, energy-efficient performance, and long service life. The biggest sustainability value is not just the material. It is how well the product supports the building envelope over time. Are all Inline products covered by the same documentation? Do not assume that every product, option, or configuration is covered in the same way. Contact Inline to confirm the correct EPD, certification, performance data, or technical document for your specific product and project. Can EPD documentation help with commercial or green-building projects? Yes. EPD documentation can help architects, builders, developers, and commercial teams review product environmental data for projects where sustainability documentation matters. Who should request EPD or technical documentation? Architects, specifiers, builders, developers, commercial buyers, Passive House project teams, and homeowners planning performance-focused projects can request documentation from Inline. Where can I get product specs and drawings? Visit the Technical Downloads page or contact Inline to request the right product documentation for your project. ## Need EPD resources for your project? Tell us what you are planning, which product series you are reviewing, and what documentation your project requires. We will help you take the next step. [ Download Inline EPD ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request Documentation ](https://inlinefiberglass.com/resources/technical-spec-download/) --- ### [Resources](https://inlinefiberglass.com/resources/) **Published:** June 12, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Window & Door Resources Not sure where to start? Our team can help you find the right fiberglass window or door path for your project. [ Talk to a Specialist ](tel:1-866-566-5656) [ View Resource Articles ](#resources) ## Researching fiberglass windows, doors, energy-efficient products, or technical documents? Start here. Inline Fiberglass resources are organized to help homeowners, architects, builders, commercial teams, and dealers find the right information faster. Explore buying guides, window material comparisons, performance resources, technical downloads, warranty information, and service support. [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) [ Explore Our Resources ](#resources) ## Find the Right Resource for Your Project Designed to provide flexible operation, energy-efficient performance, and the strength of fiberglass construction, the 300 Series combines modern functionality with clean architectural design for a wide range of residential and commercial applications. Homeowners ## Start with the Window Buying Guide Planning a replacement, renovation, or custom home project? Start with homeowner-friendly guides that explain fiberglass windows, energy efficiency, styles, colours, glass options, and what to prepare before requesting a quote. **Recommended Links:** - [ Why Fiberglass? ](https://inlinefiberglass.com/resources/why-fiberglass/) - [ Fiberglass vs Vinyl Windows ](https://inlinefiberglass.com/resources/fiberglass-vs-vinyl-windows/) - [ Energy-Efficient Windows Guide ](https://inlinefiberglass.com/resources/energy-efficient-windows-guide/) - [ Fiberglass Window Cost Guide ](https://inlinefiberglass.com/resources/fiberglass-window-cost-guide/) - [ Installation & Lead-Time Process ](https://inlinefiberglass.com/resources/installation-lead-time-process/) - [ Warranty ](https://inlinefiberglass.com/resources/warranty/) [ Start Planning Your Window Project ](https://inlinefiberglass.com/request-a-quote/) For Architects & Specifiers ## Access Product Data, Performance Resources & Technical Documents Planning a high-performance, commercial, or Passive House project? Find technical resources that support product selection, specification, performance review, and project documentation. **Recommended Links:** - [ Technical Downloads ](https://inlinefiberglass.com/resources/technical-spec-download/) - [ Passive House Windows Guide ](https://inlinefiberglass.com/resources/passive-house-windows-guide/) - [ Commercial Fiberglass Window Systems ](https://inlinefiberglass.com/solutions/developers-commercial-projects/) - [ EPD & Sustainability Resources ](https://inlinefiberglass.com/resources/epd-sustainability/) - [ Window Series Comparison Guide ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) - [ Architect / Specifier Package Request ](https://inlinefiberglass.com/architect-specifier-package-request/) [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) For Builders & Contractors ## Get Practical Product Guidance Before You Quote or Build Builders and contractors need clear product information, lead-time context, options, drawings, and support details. These resources help you understand Inline’s fiberglass window and door options before starting a project conversation. **Recommended Links:** - [ Window Series Comparison Guide ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) - [ Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) - [ Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) - [ Installation & Lead-Time Process ](https://inlinefiberglass.com/resources/installation-lead-time-process/) - [ Commercial Fiberglass Window Systems ](https://inlinefiberglass.com/solutions/developers-commercial-projects/) - [ Technical Downloads ](https://inlinefiberglass.com/resources/technical-spec-download/) - [ Warranty ](https://inlinefiberglass.com/resources/warranty/) [ Ask a Product Specialist ](tel:1-866-566-5656) For Developers & Commercial Projects ## Review Commercial, Performance & Project Support Resources For commercial, multifamily, institutional, or larger-scale projects, use these resources to review product fit, performance considerations, project examples, and spec-support pathways. **Recommended Links:** - [ Commercial Fiberglass Window Systems ](https://inlinefiberglass.com/solutions/developers-commercial-projects/) - [ Commercial Projects ](https://inlinefiberglass.com/projects/commercial/) - [ Passive House & High-Performance Products ](https://inlinefiberglass.com/products/passive-house-high-performance/) - [ Technical Downloads ](https://inlinefiberglass.com/resources/technical-spec-download/) - [ Certifications & Testing ](https://inlinefiberglass.com/about/certifications-testing/) - [ EPD & Sustainability Resources ](https://inlinefiberglass.com/resources/epd-sustainability/) - [ Technical Downloads ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Request Commercial Project Support ](tel:1-866-566-5656) For Dealers & Distributors ## Learn About Products, Support & Dealer Opportunities Interested in carrying Inline products or learning how dealer inquiries are handled? Start with product overview pages, dealer resources, and partnership inquiry information. **Recommended Links:** - [ Dealer Locator ](https://inlinefiberglass.com/dealers/) - [ Dealer Partnership Inquiry ](https://inlinefiberglass.com/dealer-partnership-inquiry/) - [ Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) - [ Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) - [ Warranty ](https://inlinefiberglass.com/resources/warranty/) - [ Technical Downloads ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Talk to a Specialist ](tel:1-866-566-5656) For Warranty, Service & Parts ## Need Support for an Existing Product? Current customers, dealers, or project teams can use service resources to understand warranty information, what details to provide, and how to submit a complete service or parts request. **Recommended Links:** - [ Warranty ](https://inlinefiberglass.com/resources/warranty/) - [ Service Request ](https://inlinefiberglass.com/contact/service-request/) - [ Service & Parts Requests ](https://inlinefiberglass.com/services/service-parts-requests/) - [ Contact ](https://inlinefiberglass.com/contact/) - [ FAQ ](https://inlinefiberglass.com/resources/faq/) [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) ## Featured Fiberglass Window Resources The 400 Series is a strong option when the window does not need to open, but the design still needs strength, light, thermal performance, and clean aesthetics. ## Why Choose Fiberglass Windows? Learn how fiberglass supports strength, durability, dimensional stability, energy efficiency, and long-term design flexibility. [ Read Why Fiberglass ](https://inlinefiberglass.com/resources/why-fiberglass/) ## Fiberglass vs Vinyl Windows Compare fiberglass and vinyl windows across durability, thermal performance, frame stability, design flexibility, and long-term value. [ Compare Materials ](https://inlinefiberglass.com/resources/fiberglass-vs-vinyl-windows/) ## Fiberglass vs Aluminum Windows Compare fiberglass and aluminum windows across durability, thermal performance, frame stability, design flexibility, and long-term value. [ Compare Materials ](https://inlinefiberglass.com/resources/fiberglass-vs-aluminum-windows/) ## Fiberglass vs Wood Windows Compare fiberglass and wood windows across durability, thermal performance, frame stability, design flexibility, and long-term value. [ Compare Materials ](https://inlinefiberglass.com/resources/fiberglass-vs-wood-windows/) ## Energy-Efficient Windows Guide Understand the role windows play in comfort, heat loss, glass packages, frame materials, and high-performance building goals. [ Explore Energy-Efficient Windows ](https://inlinefiberglass.com/resources/energy-efficient-windows-guide/) ## Passive House Windows Guide Learn what to consider when researching Passive House and high-performance window systems, including product documentation, certification scope, and project-specific review. [ Explore Passive House Resources ](https://inlinefiberglass.com/resources/passive-house-windows-guide/) ## Window Series Comparison Guide Compare Inline window series by operation, use case, style, and project fit so you can move from research to a more informed product conversation. [ Compare Window Series ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## Product Technical Downloads Access product documents, drawings, performance information, installation resources, warranty documents, and spec-support materials where available. [ Download Technical Documents ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Questions About Fiberglass Windows and Doors Resources Find clear answers to common questions about Inline Fiberglass Windows and Doors Resources [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Where should I start if I am new to fiberglass windows? Start with the ‘Why Fiberglass?’ guide, then review the Window Buying Guide and Window Series Comparison Guide. These resources will help you understand the material, compare product types, and prepare better questions before requesting a quote. What documents are available for architects and builders? Inline’s resource library features product specs, technical downloads, drawings, certification information, warranty documents, installation resources, and spec-support request forms where available. How do I compare fiberglass with vinyl, aluminum, or wood? Use Inline’s material comparison guides. They explain practical differences in strength, stability, energy efficiency, maintenance, design flexibility, and long-term value without relying on unsupported “best” claims. Are all Inline products Passive House or PHIUS certified? Certifications are product-specific and verified. Contact Inline to confirm which products, configurations, and documents apply to your project. Can homeowners use the technical resources? Yes. Homeowners can use technical resources to better understand product options, glass packages, performance language, and project planning. For detailed specifications, speak with Inline or share the documents with your builder, architect, or contractor. What should I do when I am ready to move forward? Request a quote, ask a product specialist, book a showroom visit, or request product specs. The best next step depends on whether you are a homeowner, architect, builder, commercial buyer, dealer, or existing customer. ## Ready to Move From Research to the Next Step? Whether you are comparing window materials, planning a replacement, specifying a high-performance project, or looking for technical documents, Inline Fiberglass can help you find the right path. Tell us about your project and our team will help you take the next step. [ Talk to a Specialist ](tel:1-866-566-5656) [ Request A Free Quote ](https://inlinefiberglass.com/request-a-quote/) --- ### [Request a Quote](https://inlinefiberglass.com/request-a-quote/) **Published:** June 16, 2026 **Author:** anthony@webhaven.ca **Content:** # Request a Quote from Inline Fiberglass Once your request is submitted, Inline Fiberglass will review your information and follow up with the next step. [ Start Quote Request ](#form) [ Call Inline Fiberglass ](tel:1-866-566-5656) ## A Clear First Step for Your Window or Door Project Requesting a quote should not feel complicated. Send us the project details you have, even if you are still comparing products or confirming measurements. Inline Fiberglass supports quote and project inquiries for: - Fiberglass windows - Fiberglass entrance doors - Sliding patio doors - High-performance and Passive House project needs - Residential, commercial, builder, and architect-led projects - Dealer and distributor opportunities Your information is used only to respond to your request. The Master Copy Brief specifically recommends including a privacy note near forms to reduce hesitation and improve trust. [ Request a Free Quote ](#form) ## What to Expect After You Request a Quote Once your request is submitted, Inline Fiberglass will review your project information and follow up with the next step. ## 1. Tell us about your project Share your contact details, project location, product interest, timeline, and any notes that will help us understand what you need. ## 2. We review your request Our team will look at your project type and route your inquiry based on whether you are a homeowner, architect, builder, developer, dealer, or existing customer. ## 3. We help you move forward Depending on your request, the next step may include product guidance, quote clarification, technical documentation, a showroom visit, or referral to the right dealer or support path. **Note:** If your request is about service, parts, warranty, or an existing order, please use the Service & Parts Request path so it can be reviewed correctly. [ Request a Free Quote ](#form) ## Choose the Path That Fits Your Project Whether you’re upgrading a home, specifying a project, or coordinating a build, the 600 Series offers fiberglass durability, energy-efficient glass options, and flexible configurations to support a wide range of project goals. ## Homeowners Request a quote for fiberglass windows, entrance doors, sliding patio doors, or replacement project needs. Share your city, product interest, rough measurements, and photos if available. **Helpful links:** - [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) - [ Explore Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) - [ Explore Fiberglass Doors ](https://inlinefiberglass.com/products/fiberglass-doors/) - [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Architects & Specifiers Request product information, project support, specs, drawings, or guidance for high-performance and Passive House projects. **Helpful links:** - Request Product Specs - Technical Downloads - [ Passive House Products ](https://inlinefiberglass.com/products/passive-house-high-performance/) ## Builders and Contractors Send project details, drawings, product needs, and timelines for residential or light commercial builds. **Helpful links:** - Builder Support - [ Window Series Comparison ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) - Technical Documents ## Developers & Commercial Project Teams Request support for commercial fiberglass window and door systems, high-performance requirements, project coordination, or documentation needs. **Helpful links:** - [ Commercial Projects ](https://inlinefiberglass.com/projects/commercial/) - [ Commercial Fiberglass Window Systems ](https://inlinefiberglass.com/solutions/developers-commercial-projects/) - Request Project Support ## Dealers & Distributors Interested in carrying Inline Fiberglass products? Tell us about your market, business, and product interest so your inquiry can be routed correctly. **Helpful links:** - Become a Dealer - Dealer Locator ## Service, Parts, or Warranty Requests If you already own Inline products and need service, replacement parts, or warranty support, use the service request form instead of the quote form. **Helpful links:** - Submit a Service Request - Warranty ## Ready to Start Your Fiberglass Window or Door Project? Send us a few project details and Inline Fiberglass will help you move toward the right quote, product, dealer, or technical support path. [ Request a Free Quote ](#form) [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) ## Common Questions About Requesting a Quote Find clear answers to common questions about requesting a quote. [ Request a Free Quote ](#form) What information should I include with my quote request? Please include your project location, product interest, timeline, and any details you already have. Photos, plans, rough measurements, drawings, or window and door counts can help the team better understand your project. Do I need exact measurements before requesting a quote? No. If you have measurements, include them. If not, send what you know. Inline can still review your request and help identify the right next step. Can I upload photos or plans? Yes. Uploading photos, drawings, plans, or measurements is recommended when available. These details can help reduce back-and-forth and improve the quality of the initial review. Can homeowners request a quote directly? Yes, homeowners can use this form to start a quote request. Depending on the project location and scope, Inline may guide you through the appropriate direct, showroom, dealer, or project support path. Can architects or builders use this form? Yes. Architects, builders, contractors, developers, and commercial project teams can use this form to request product guidance, quote support, or technical follow-up. Do you provide quotes for Passive House or high-performance projects? Yes, you can request support for Passive House or high-performance project needs. Product suitability, certification details, and documentation should be confirmed with Inline for the specific project and product series. What if I need service or parts instead of a quote? Use the Service & Parts Request form if your inquiry is about an existing product, warranty issue, replacement part, adjustment, or service need. That helps route your request properly. Can I visit the showroom before requesting a quote? Yes. If you want to see product options in person, you can request a showroom visit or mention showroom interest in your quote request. How quickly will Inline respond? Response times may vary based on project details and volume. Inline will review your request and follow up with the next step. ## Start Your Quote Request Tell us what you are planning. The more detail you can provide, the easier it is for our team to understand your project. Request a quote Notify First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Residential](https://inlinefiberglass.com/projects/residential/) **Published:** June 11, 2026 **Author:** anthony@webhaven.ca **Content:** # Residential Fiberglass Window and Door Projects See how Inline Fiberglass windows and doors are used in homes where comfort, durability, clean design, and long-term performance matter [ Start Your Project ](#form) [ View Our Projects ](#our-gallery) ## Explore Fiberglass Windows, Doors, and High-Performance Products Choose the product path that fits your project. Inline offers fiberglass window and door products for residential, commercial, architectural, and dealer-supported applications. ## Fiberglass Windows For homeowners planning window replacement, renovations, or custom home projects. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## 4500 Series Entrance Doors For front entrances, sidelites, transoms, and design-focused residential entryways. [ Explore Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ## 600 Series Sliding Patio Doors For patios, decks, large openings, and indoor-outdoor living spaces. [ Explore Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## Passive House & High-Performance For homeowners, builders, and designers planning high-performance residential projects. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## Get Ideas for Your Own Window or Door Project Every home is different. Some projects need larger glass areas and modern sightlines. Others need better comfort, improved energy performance, a refreshed entrance, or a sliding patio door that connects the home to the outdoors. Use these residential project examples to explore product styles, room applications, finishes, and project types that may fit your home. [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Inline-Fiberglass-windows-doors-projects-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/fiberglass-solutions-11.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/dealer-solutions-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-08.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-07.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-06.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/900-series-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/900-series-02.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/850-series-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/900-series-03.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/850-series-02.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/800-series-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/800-series-02.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/800-series-03.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/325-awning-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/325-awning-02.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/325-casement-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/325-casement-02.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-400-series-04.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-001.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-003.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-002.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/325-fixed-04.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/325-fixed-02.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/325-fixed-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Windows-400-series-02.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-400-series-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/300-series-installed-03.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-17.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-16.jpg) ## Built for Homes Where Performance and Design Both Matter Residential window and door projects are not just about replacing old products. They affect comfort, natural light, curb appeal, energy performance, and how the home feels every day. Inline Fiberglass focuses on fiberglass windows and doors, giving homeowners a product path built around strength, durability, clean design, and long-term performance. ## Fiberglass Windows for Residential Projects Designed for homes that need durable frames, energy-efficient glass options, and a clean look. They can support many residential applications, including fixed windows, casement windows, awning windows, tilt and turn windows, sliders, single hung windows, and double hung windows. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Fiberglass Entrance Doors A front entrance sets the tone for the home. Inline fiberglass entrance doors are designed for homeowners who want a strong, attractive, and energy-conscious door system with design flexibility. [ Explore Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ## Fiberglass Sliding Patio Doors Sliding patio doors can help open the home to decks, patios, backyards, and outdoor living areas. Inline’s sliding door systems are built for smooth operation, large openings, and high-performance residential use. [ Explore Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## Colours, Glass, Grilles, and Hardware Options Residential projects often come down to details. Inline can support design choices such as colour, glass packages, grille styles, and hardware options so the finished product fits the home. [ View Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) ## What to Look for in Each Residential Project A good residential project page should show more than a pretty photo. It should help you understand what was chosen, where it was used, and why it fit the home. When reviewing Inline residential projects, look for: ## Product type Windows, entrance doors, sliding patio doors, or a full window and door package. ## Room or application Kitchen, living room, bedroom, bathroom, entryway, patio. ## Project goal More natural light, better comfort, updated design, improved performance. ## Product series The specific Inline window or door series used, where available. ## Finish and glass options Colour, grille pattern, glass package, and hardware details, where available. ## Project Style How different window and door choices support different home styles. [ Which Product Fits My Home? ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) ## Planning a Similar Project? Here’s the Next Step. You do not need to know the exact product series before contacting Inline. Start with the basics and the team can help guide the next step. ## Step 01 — Tell us about your home Share your project location, whether it is a replacement or new build, and which products you are considering. ## Step 02 — Send photos, plans, or rough measurements Photos, plans, or basic measurements help the team understand the project and recommend the right product path. ## Step 03 — Get product guidance and a quote path Inline will review your request and help you understand the next step for your residential fiberglass window or door project. [ Start My Residential Quote ](#form) ## Start a Similar Residential Window or Door Project Ready to upgrade your home with fiberglass windows or doors? Tell Inline Fiberglass about your project and the team will help you understand your options, product fit, and next step. [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) [ Start Similar Project ](#form) ## Common Questions About Residential Projects Find clear answers to common questions about Residential fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Do you work with homeowners? Yes. Homeowners can contact Inline Fiberglass to discuss residential window and door projects. Depending on your location and project needs, the next step may involve the Inline team, a dealer, builder, contractor, or product specialist. What information should I provide for a residential quote? Share your name, contact details, project location, product needs, timeline, and a short description of the project. Photos, plans, or rough measurements are also helpful. Can I use Inline fiberglass windows for a renovation or replacement project? Yes. Inline fiberglass windows can be considered for replacement, renovation, and new-build residential projects. The best product path depends on the home, opening sizes, performance goals, and design needs. Can I choose custom colours or design options? Inline offers options for glass, colours, grilles, and hardware. Contact the team to confirm which options are available for your project and product selection. Which window series should I choose for my home? That depends on the room, operating style, design goals, and performance needs. Inline offers several fiberglass window styles, including fixed, casement, awning, tilt and turn, slider, single hung, and double hung windows. Are Inline fiberglass windows energy efficient? Inline fiberglass windows and doors are built for performance-focused projects. The right glass package, product series, and configuration will affect the final energy performance of your project. Can I visit the showroom? Yes. Inline Fiberglass has a showroom at 30 Constellation Court in Etobicoke / Toronto. Visitors should contact Inline to confirm current hours and the best time to visit. Does Inline install directly? Installation support can depend on project type, location, and whether the project is handled directly, through a dealer, or through a contractor. Contact Inline with your project details so the team can guide you to the right next step. How long does a residential window or door project take? Timelines depend on product selection, customization, project size, dealer or contractor coordination, and manufacturing requirements. The best first step is to request a quote and share your target timeline. ## Tell Us About Your Residential Window or Door Project Include your location, product needs, timeline, and any photos or plans you have. Our team will review your request and help you take the next step. Request a quote Notify First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Sifton Helio Building](https://inlinefiberglass.com/projects/commercial/sifton-helio-building/) **Published:** June 12, 2026 **Author:** anthony@webhaven.ca **Content:** # Sifton Helio Building Fiberglass Window Case Study High-Performance Fiberglass Windows for a Net-Zero Multifamily Project in London, Ontario [ Start Your Project ](#form) [ View Case Study ](#details) ## High-Performance Fiberglass Windows for a Net-Zero Multifamily Project in London, Ontario The Sifton Helio Building in London, Ontario, was designed as a mixed-use, multifamily residential building targeting net-zero energy performance. For a project with this level of energy ambition, the window system needed to do more than fill openings. It needed to support comfort, durability, airtightness, and long-term building envelope performance. Inline Fiberglass supplied high-performance Series 325 Fixed and Casement fiberglass windows for the project, helping support the building’s thermal performance goals while maintaining clean architectural sightlines. [ Start Your Project ](#form) [ Project Snapshot ](#project-snapshot) ## A Multifamily Building Designed Around Energy Efficiency The Helio Building was planned with a clear performance objective: create a mixed-use residential building that could support net-zero energy targets. That kind of project places real demands on the building envelope. Windows must help limit heat loss, control air leakage, support indoor comfort, and perform reliably through seasonal temperature changes. For architects, developers, and builders, the window specification is not only a design decision. It affects energy modelling, occupant comfort, mechanical load, durability, and long-term operating performance. Inline Fiberglass was selected to supply fiberglass window systems that could help meet those project demands. [ The Challenge ](#the-challange) ## Project Snapshot **Project:** Sifton Properties’ Helio Building **Location:** 1325 Riverbend Rd., London, Ontario **Building Type:** Mixed-use multifamily residential **Developer:** Sifton Properties **Architect:** Diamond Schmitt Architects **Contractor:** EllisDon Construction **Inline Product Used:** Series 325 Fixed and Casement Fiberglass Windows **Project Goal:** Support a high-performance building envelope for a mixed-use multifamily project targeting net-zero energy ## The Challenge: Supporting a Tight Thermal Boundary High-performance multifamily buildings depend on careful coordination between the envelope and the mechanical systems. If the window system allows too much heat loss, air movement, or frame movement, the mechanical system has to work harder to maintain comfort. For the Helio Building, the window system needed to support: - Strong thermal performance - Reliable air sealing - Fixed and operable window configurations - Durable frame performance in Ontario weather - Clean exterior and interior design integration - Product support suitable for a larger commercial project The goal was not simply to install windows. The goal was to help the building perform as designed. [ The Solution ](#the-solution) ## The Solution: Series 325 Fixed and Casement Fiberglass Windows Inline supplied Series 325 Fixed and Casement fiberglass windows for the Sifton Helio Building. The Series 325 line is designed for projects that require a balance of strength, energy performance, durability, and design flexibility. Fixed units support larger glazed areas where maximizing daylight, views, and architectural expression is a priority, while casement units provide operable ventilation and occupant comfort where needed. For a multifamily project, that combination gives the design team flexibility to specify windows based on room function, orientation, ventilation requirements, and building performance goals, while maintaining a consistent appearance and fiberglass frame platform throughout the development. The result is a coordinated window strategy that supports both the architectural vision of the building and the long-term performance expectations of residents and ownership. [ 325 Series Casement Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-casement/) [ 325 Series Fixed Windows ](https://inlinefiberglass.com/products/fiberglass-windows/325-series-fixed/) ## Why Inline Fiberglass Made Sense for This Project Fiberglass is a strong fit for high-performance residential and commercial projects because it supports long-term dimensional stability and thermal performance. For the Helio Building, Inline’s fiberglass windows helped support: ### Thermal Comfort Fiberglass frames help reduce unwanted heat transfer compared with more conductive window frame materials. ### Envelope Stability Fiberglass is dimensionally stable, which helps window systems maintain performance through temperature changes. ### Clean Architectural Design Series 325 Fixed and Casement windows provide a practical mix of fixed glass areas and operable ventilation. ### Commercial Project Support Inline supports larger project teams with product guidance, technical information, and window system options. ## Sifton Helio Building Project Gallery See how Series 325 Fixed and Casement windows were integrated throughout the Helio Building to support daylight, comfort, and long-term building performance. [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-02.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-03.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-01.jpg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-04.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-05.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-06.jpeg) [ ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio07.jpeg) ## Built for Developers, Architects, and Commercial Project Teams The Sifton Helio Building shows how Inline products can support more than individual home upgrades. Inline fiberglass window systems can be used in multifamily, commercial, institutional, and high-performance projects where product reliability and building envelope performance matter. Explore related product links: **[325 Series Fixed Fiberglass Windows](https://inlinefiberglass.com/products/fiberglass-windows/325-series-fixed/)** **[325 Series Casement Fiberglass Windows](https://inlinefiberglass.com/products/fiberglass-windows/325-series-casement/)** **[Fiberglass Windows](https://inlinefiberglass.com/products/fiberglass-windows/)** **[Commercial Fiberglass Window Systems](https://inlinefiberglass.com/solutions/developers-commercial-projects/)** **[Passive House & High-Performance Products](https://inlinefiberglass.com/products/passive-house-high-performance/)** [ Request a Free Quote ](#form) ## Planning a Similar Project? Whether your project involves fixed windows, casement windows, large openings, high-performance goals, or multifamily construction, our team can help you review product options and take the next step. [ Talk to a Specialist ](tel:1-866-566-5656) [ Start Similar Project ](#form) ## Questions About The Sifton Helio Building Project Find clear answers to common questions about the Sifton Helio Building project case study [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What windows were used in the Sifton Helio Building? The Sifton Helio Building used Inline Fiberglass Series 325 Fixed and Casement windows. Where is the Sifton Helio Building located? The project is located at 1325 Riverbend Rd. in London, Ontario. What type of building is the Sifton Helio Building? The Helio Building is a mixed-use, multifamily residential building targeting net-zero energy performance. Why are fiberglass windows a good fit for high-performance multifamily buildings? Fiberglass windows are a strong fit for high-performance buildings because they support thermal performance, durability, and dimensional stability. These qualities can help the building envelope perform more reliably over time. Can Inline support commercial or multifamily window projects? Yes. Inline supports commercial, multifamily, architectural, and high-performance projects with fiberglass window and door products, technical information, and project support. Can I request product specs for a similar project? Yes. Architects, builders, developers, and commercial project teams can request product information, technical documents, and project support from Inline. ## Start A Similar Project Planning a multifamily, commercial, or high-performance building project? Inline Fiberglass can help you review product options, request specs, and take the next step toward a quote. Request a quote Updates First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Commercial](https://inlinefiberglass.com/projects/commercial/) **Published:** June 11, 2026 **Author:** anthony@webhaven.ca **Content:** # Commercial Fiberglass Window & Door Projects Commercial buildings need windows and doors that do more than look good in a rendering. [ Start Your Project ](#form) [ View Our Projects ](#projects) ## Commercial Buildings Need Windows and Doors That Do More Than Just Look Good Commercial buildings need windows and doors to also support the building envelope, meet project requirements, hold up over time, and give architects, builders, and developers confidence before specification. Inline Fiberglass supplies fiberglass window and door products for commercial, institutional, multifamily, retrofit, and high-performance building projects. Explore examples of how Inline products have been used in real commercial buildings, then contact our team to discuss the right product path for your project. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) [ Start Your Project ](#form) ## Commercial Project Proof for Performance-Driven Buildings Inline Fiberglass products have been used in commercial and institutional projects where durability, thermal performance, air control, and design flexibility matter. Our commercial project experience includes: - Institutional and civic buildings - Multifamily and mixed-use developments - Commercial retrofits - High-performance building envelopes - Projects requiring custom sizing, colour coordination, or technical documentation - Buildings where architects and project teams need clear product support before specification Inline can help you review product fit, documentation, and next steps. [ Request Project Support ](tel:1-866-566-5656) ## See How Fiberglass Supports Building Performance These featured projects highlight different approaches to energy efficiency, durability, occupant comfort, and long-term building performance. ## TRCA Headquarters **Location:** Toronto, Ontario **Project Type:** Institutional / high-performance building **Buyer Type:** Architect, builder, institutional project team The Toronto and Region Conservation Authority Headquarters is a major institutional project designed with advanced sustainability and building-envelope goals in mind. Inline Fiberglass was specified to provide fenestration support for a building where energy conservation, solar heat gain management, air infiltration control, and low embodied carbon were important project considerations. [ View TRCA Case Study ](https://inlinefiberglass.com/projects/commercial/trca/) ## Ontario Association of Architects Headquarters Retrofit **Location:** Toronto, Ontario **Project Type:** Commercial retrofit / deep energy retrofit **Buyer Type:** Architect, specifier, retrofit project team The Ontario Association of Architects Headquarters retrofit required a serious building-envelope upgrade. Inline Fiberglass was selected to help improve the performance of the existing fenestration as part of a broader effort to reduce energy use and support low-carbon building goals. [ View OAA Case Study ](https://inlinefiberglass.com/projects/commercial/ontario-association-of-architects/) ## Sifton Helio Building **Location:** London, Ontario **Project Type:** Commercial / multifamily / high-performance building **Buyer Type:** Developer, builder, project team The Sifton Helio Building is a commercial project example where Inline Fiberglass products were used to help support a tightly controlled building envelope. The project required window performance that could work alongside advanced mechanical systems and support long-term building efficiency. [ View Sifton Helio Case Study ](https://inlinefiberglass.com/projects/commercial/sifton-helio-building/) ## Mosaïq **Location:** Ottawa, Ontario **Project Type:** Multifamily / supportive housing / high-performance building **Buyer Type:** Developer, architect, builder Mosaïq at 811 Gladstone Avenue used Inline Series 300 Tilt & Turn and Fixed windows with triple-pane Passive House performance glazing. The project paired high-performance fiberglass windows with advanced mechanical systems to support operational efficiency goals. [ View Mosaïq Case Study ](#) ## Product Options for Commercial Applications Inline Fiberglass focuses on fiberglass windows and doors. That focus matters on commercial projects because the material supports strength, dimensional stability, thermal performance, and long-term durability. For project teams, that means better product confidence when choosing windows and doors for larger buildings, retrofits, and high-performance applications. Commercial projects may require fixed windows, operable units, large openings, entrance doors, sliding doors, or high-performance glazing packages. Inline can help project teams review the right product path based on building type, performance needs, design intent, and documentation requirements. **Common product paths include:** - **400 Series Strip / Fixed Windows** for large fixed glass areas and commercial design applications - **300 Series Tilt & Turn and Fixed Windows** for high-performance and versatile operation needs - **325 Series Casement, Awning, and Fixed Windows** for durable commercial and residential-style applications - **600 Series Sliding Patio Doors** for larger openings and high-performance access points - **Glass, colour, grille, and hardware options** for design coordination - **Passive House and high-performance** products where applicable to the project [ Explore Commercial Windows ](https://inlinefiberglass.com/services/commercial-fiberglass-window-systems/) ## Commercial and Institutional Applications Inline fiberglass windows and doors can be considered for a range of commercial and larger-building applications, including: ### Institutional Buildings Public, civic, educational, or organizational buildings where envelope performance and long-term durability matter. ### Multifamily Buildings For apartment, condominium, supportive housing, and mixed-use projects that need reliable window systems ### Commercial Retrofits For existing buildings where window replacement is part of a broader performance or modernization upgrade. ### High-Performance Projects For buildings pursuing stronger thermal performance, improved air control, or Passive House-aligned design goals. ### Design-Driven Spaces For projects where colour, sightlines, glass selection, and architectural finish need to support the building design. ### Energy-Conscious Projects Projects focused on thermal performance, occupant comfort, durability, and long-term building efficiency. ## From Project Review to Product Direction Commercial window and door projects usually need a more careful process than a standard residential quote. Inline helps project teams move from early product interest to clearer next steps. ## Step 01 — Share Your Project Details Send the project location, building type, product needs, timeline, drawings, elevations, or performance targets. ## Step 02 — Review Product Fit Inline reviews which window or door series may fit the project, including glazing, operation type, sizing, colour, and documentation needs. ## Step 03 — Confirm Technical and Quote Requirements The team helps clarify what information is needed for quotation, specification, or further technical review. ## Step 03 — Move Forward With the Right Product Path Once the product direction is clear, Inline can support the next step through a commercial inquiry, quote request, or spec package request. [ Start a Commercial Project ](#form) ## Start a Commercial Fiberglass Window or Door Project Have a commercial, institutional, multifamily, retrofit, or high-performance building project in planning? Inline Fiberglass can help you review product options, documentation needs, and next steps for your project. [ Visit the Showroom ](https://inlinefiberglass.com/book-showroom-visit/) [ Start Similar Project ](#form) ## Common Questions About Commercial Projects Find clear answers to common questions about Commercial fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What types of commercial projects does Inline Fiberglass support? Inline Fiberglass products can be considered for institutional buildings, multifamily projects, commercial retrofits, mixed-use developments, and high-performance building projects. The right product depends on the building type, design requirements, performance goals, and project documentation needs. Which Inline products are used for commercial projects? Commercial projects may use fixed windows, operable windows, tilt and turn windows, casement or awning windows, sliding doors, or high-performance glazing options. Common product paths include the 400 Series, 300 Series, 325 Series, and 600 Series, depending on the project. Can Inline provide technical documents for architects and specifiers? Yes. Architects and specifiers can request product specs, drawings, performance information, and certification details where available. Product-specific documentation should be confirmed with the Inline team before final specification. Are Inline products suitable for Passive House or high-performance buildings? Select Inline products are designed for high-performance building needs. Certification scope, product eligibility, glazing configuration, and documentation should be confirmed for the specific project before specification. Can commercial windows be customized? Inline offers product options that may include custom sizing, glass packages, colours, grilles, and hardware depending on the selected product series and project requirements. Contact Inline to confirm what is available for your project. What information should I send for a commercial quote? Select Inline products are designed for high-performance building needs. Certification scope, product eligibility, glazing configuration, and documentation should be confirmed for the specific project before specification. Who should contact Inline about a commercial project? Architects, specifiers, builders, developers, contractors, property owners, and institutional project teams can contact Inline for commercial project support. ## Need Product Specs for a Commercial Project? Tell us what you are working on and what information you need. Inline can help you review product options, documentation, and next steps for your project. Request a quote Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town Product needed: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Share project details and timeline I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Request a quote We respect your privacy and will only use your details to respond to your request. --- ### [Projects](https://inlinefiberglass.com/projects/) **Published:** June 11, 2026 **Author:** anthony@webhaven.ca **Content:** # Fiberglass Window and Door Projects Built for Real-World Performance Explore project examples by category, see how fiberglass windows and doors fit different building needs, and take the next step toward your own project. [ Start Your Project ](#form) [ View Our Projects ](#our-projects) ## See How Inline Fiberglass Performs Across Project Types A window or door product is easier to trust when you can see where it has been used. This project hub brings together residential, commercial, and Passive House/high-performance examples so homeowners, architects, builders, and developers can quickly find relevant proof. **Use this page to explore:** - **Residential fiberglass window projects** for renovations, custom homes, and design-focused upgrades - **Commercial fiberglass window projects** for institutional, multifamily, and larger building applications - **Passive House and high-performance window projects** where thermal performance and documentation matter - **Case studies** that connect project goals with product selection, application, and results [ View Our Projects ](#our-projects) ## Explore Fiberglass Projects by Application Browse residential, commercial, and high-performance projects to see how Inline fiberglass windows and doors are used across different building types and performance goals. ## Residential Projects Fiberglass windows and doors for homes, renovations, and custom builds. See how Inline fiberglass products support comfort, curb appeal, natural light, and long-term durability in residential settings. Common project types include: - Window replacement projects - Custom homes - Modern renovations - Entrance door upgrades - Sliding patio door projects [ View Residential Projects ](https://inlinefiberglass.com/projects/residential/) ## Commercial Projects Fiberglass window and door systems for buildings that need durability and technical confidence. Explore commercial and institutional applications where project teams need performance, documentation, product consistency, and long-term value. Common project types include: - Commercial buildings - Institutional facilities - Multifamily developments - Retrofit projects - Architect-led specifications [ View Commercial Projects ](https://inlinefiberglass.com/projects/commercial/) ## Passive House & High-Performance Projects For architects, builders, developers, and homeowners working toward high-performance goals, Inline can help identify the right product path, documentation, and project support. Common project types include: - Passive House and PHIUS-focused - High-performance envelopes - Triple-glazed window and door configurations - Airtightness and thermal comfort - Technical documentation [ View Passive House Projects ](https://inlinefiberglass.com/projects/passive-house/) ## See Fiberglass Windows and Doors in Real Projects Explore how Inline fiberglass windows and doors are used across residential, commercial, and high-performance projects throughout a variety of applications. All Residential Projects Commercial Projects Passive House / High-Performance [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Fiberglass-Windows-Doors-Engineered-in-Canada-20.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Fiberglass-Windows-Doors-Engineered-in-Canada-20.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-25.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-25.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-08.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-08.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-09.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-09.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-07.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Ontario-Association-of-Architects-07.jpeg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-20.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-20.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-003.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-700-series-003.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-06.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-06.jpeg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/850-series-01.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/850-series-01.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-05.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-05.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-19.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-19.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-04.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/trca-04.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-04.j10peg.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-04.j10peg.jpeg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-03.jpeg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Sifton-Helio-03.jpeg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-14.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-14.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-01.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/Fiberglass-windows-and-doors-solutions-01.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-16.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/high-performance-16.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-21.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-21.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-12.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-12.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-400-series-04.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/06/windows-400-series-04.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-18.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-18.jpg) [ ![Residential Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-15.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-15.jpg) [ ![Commercial Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-14.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-14.jpg) [ ![Passive House high-performance Inline fiberglass project](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-04.jpg) ](https://inlinefiberglass.com/wp-content/uploads/2026/05/Inline-Fiberglass-04.jpg) ## Proof Before You Choose a Product Choosing fiberglass windows or doors is not only about comparing product specs. It is also about seeing how the product fits real buildings. Inline project examples can help you answer practical questions: - Can fiberglass windows work for my home or building type? - Which products are best suited for residential, commercial, or high-performance applications? - Can Inline support projects that need technical documents or specification help? - What types of design styles, openings, and project goals can fiberglass support? - How do I move from project inspiration to a quote or product recommendation? [ Talk to a Product Specialist ](tel:1-866-566-5656) ## Common Questions About Fiberglass Windows and Doors Find clear answers to common questions about fiberglass windows and doors, including product options, performance considerations, and how to choose the right solution for your project. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Can Inline fiberglass windows be used in residential projects? Yes. Inline fiberglass windows and doors can support residential renovations, custom homes, and energy-efficient upgrades. The best product path depends on your opening sizes, design goals, location, and project requirements. Can Inline products be used in commercial buildings? Yes. Inline supports commercial and building project inquiries with fiberglass window and door products, technical documentation, and project support. Commercial teams should contact Inline to confirm product fit, documentation, and project requirements. Are Inline products suitable for Passive House or high-performance projects? Select Inline products are designed for high-performance building needs. For Passive House, PHIUS, or other certification-driven projects, contact Inline to confirm the right product, certification scope, and technical documentation for your project. Can I request a quote based on a project I like? Yes. If you see a project that is similar to what you want, use the quote form and mention the project example. Inline can help you understand which product path may be appropriate. Can architects or builders request technical support from the projects page? Yes. Architects, builders, developers, and commercial teams can request product specs, drawings, and technical support for relevant projects. ## Tell Us About Your Fiberglass Windows or Doors Project Include your location, product needs, timeline, and any photos or plans you have. Our team will review your request and help you take the next step. Contact form general Contact First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther City/Town I'm interested in: - Select -QuoteShowroom visitSalesServiceSpecsDealer partnershipGeneral questionOther Project notes I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Privacy Policy](https://inlinefiberglass.com/privacy-policy/) **Published:** June 22, 2026 **Author:** anthony@webhaven.ca **Content:** # Privacy Policy Continue reading below for the websites privacy policy [ Read More ](#article) ## Privacy Policy Inline Fiberglass Ltd provides information on this website ‘as is’. Efforts are made to ensure the information is accurate and current at the time of publication. However, Inline Fiberglass Ltd accepts no liability for any errors or omissions. Inline Fiberglass Ltd will not be liable for any loss of profits or damage of any kind (including consequential or economic loss) as a result of information contained on this website. ## Personal identification information We may collect personal identification information from Users in a variety of ways, including, but not limited to, when Users visit our site, fill out a form, and in connection with other activities, services, features, or resources we make available on our Site.. Users may visit our Site anonymously. We will collect personal identification information from Users only if they voluntarily submit such information to us. Users can always refuse to supply personally identification information, except that it may prevent them from engaging in certain Site related activities. ## Non-personal identification information We may collect non-personal identification information about Users whenever they interact with our Site. Non-personal identification information may include the browser name, the type of computer, and technical information about the User’s means of connection to our Site, such as the operating system and the Internet service providers utilized, and other similar information. ## Web browser cookies Our Site may use “cookies” to enhance User experience. The user’s web browser places cookies on their hard drive for record-keeping purposes and sometimes to track information about them. User may choose to set their web browser to refuse cookies or to alert you when cookies are being sent. If they do so, note that some parts of the Site may not function properly. ## How we use collected information Inline Fiberglass Ltd. may collect and use Users’ personal information for the following purposes: – To improve customer service The information you provide helps us respond to your customer service requests and support needs more efficiently. – To personalize user experience We may use information in the aggregate to understand how our Users as a group use the services and resources provided on our Site. – To improve our Site We may use the feedback you provide to improve our products and services. – To send periodic emails We may use the email address to send User information and updates pertaining to their order. It may also be used to respond to their inquiries, questions, and/or other requests. If the User decides to opt-in to our mailing list, they will receive emails that may include company news, updates, related product or service information, etc. ## How we protect your information We adopt appropriate data collection, storage, and processing practices and security measures to protect against unauthorized access, alteration, disclosure or destruction of your personal information, username, password, transaction information, and data stored on our Site. ## Sharing your personal information We do not sell, trade, or rent Users’ personal identification information to others. We may share generic aggregated demographic information not linked to any personal identification information regarding visitors and users with our business partners, trusted affiliates, and advertisers for the purposes outlined above. ## Third-party websites Users may find advertising or other content on our Site that links to the sites and services of our partners, suppliers, advertisers, sponsors, licensors, and other third parties. We do not control the content or links that appear on these sites and are not responsible for the practices employed by websites linked to or from our Site. In addition, these sites or services, including their content and links, may be constantly changing. These sites and services may have their own privacy policies and customer service policies. Browsing and interaction on any other website, including websites that have a link to our Site, is subject to that website’s own terms and policies. ## Changes to this privacy policy Inline Fiberglass Ltd. has the discretion to update this privacy policy at any time. When we do, we will revise the updated date at the bottom of this page. We encourage Users to frequently check this page for any changes to stay informed about how we are helping to protect the personal information we collect. You acknowledge and agree that it is your responsibility to review this privacy policy periodically and become aware of modifications. ## Your acceptance of these terms By using this Site, you signify your acceptance of this policy and the terms of service. If you do not agree to this policy, please do not use our Site. Your continued use of the Site following the posting of changes to this policy will be deemed your acceptance of those changes. ## Contacting us If you have any questions about this Privacy Policy, the practices of this site, or your dealings with this site, please contact us at: Inline Fiberglass Ltd. 30 Constellation Court, Toronto, Ontario, Canada M9W1K1 (416) 679-1171 --- ### [Locations](https://inlinefiberglass.com/locations/) **Published:** June 19, 2026 **Author:** anthony@webhaven.ca **Content:** # Inline Fiberglass Locations Looking for Inline Fiberglass locations, fiberglass windows near you, or an authorized dealer? Start here. [ Find a Dealer ](https://inlinefiberglass.com/dealers/) [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## Inline Fiberglass Locations, Showroom and Dealer Network Inline Fiberglass serves customers through our Toronto / Etobicoke showroom, local project support in the Greater Toronto Area, and an authorized dealer network across select Canadian and U.S. markets. Whether you are planning a home renovation, custom build, commercial project, Passive House project, or dealer-supported order, this page will help you choose the right next step. [ Find a Dealer ](https://inlinefiberglass.com/dealers/) [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## How Would You Like to Connect With Inline? Explore showroom visits, GTA project support, or authorized dealer locations to find the best starting point for your fiberglass window or door project. ## Visit the Toronto / Etobicoke Showroom See Inline fiberglass windows and doors in person, review product options, and speak with the team about your project. **Best for:** Homeowners, builders, architects, and project teams near Toronto or the GTA who want product guidance before requesting a quote. [ Book a Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) ## Find Local Support in the GTA Inline supports fiberglass window and door inquiries across the Greater Toronto Area. Start with a quote request and include your project location. **Featured GTA service areas:** Toronto, Etobicoke, Mississauga, Vaughan, Markham, Oakville, Richmond Hill, and North York. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## Find an Authorized Inline Dealer Outside the immediate Toronto area? Inline products are available through a network of authorized dealers in select markets. Dealers may assist with product selection, quoting, ordering, and local project coordination depending on your region. [ Find a dealer ](https://inlinefiberglass.com/dealers/) ## Clear Location Information. No Confusing Branch Claims. Inline Fiberglass is a specialized fiberglass window and door manufacturer. Our location structure is designed to make the next step clear: - **Inline-owned showroom:** Visit the Toronto / Etobicoke showroom for product guidance and project conversations. - **GTA service-area support:** Request a quote and include your project location so the team can route your inquiry properly. - **Authorized dealers:** Connect with dealer partners in select Canadian and U.S. markets. - **Service and parts requests:** Existing customers should use the service request form so the right support team can review the issue. [ Tell Us About Your Project ](https://inlinefiberglass.com/contact/) ## How Inline Serves Different Location-Based Requests Find the right path based on your role, project type, and the type of support you need from Inline Fiberglass. ## If You Are a Homeowner Tell us where your project is located and what you are considering: fiberglass windows, entrance doors, sliding patio doors, or high-performance products. The team can help you understand the right quote or showroom path. [ Request a Quote ](https://inlinefiberglass.com/request-a-quote/) ## If You Are an Architect or Specifier If your location search is tied to a project specification, start with the technical path. Inline can help you confirm product fit, documentation, drawings, and certification scope where applicable. [ Request Product Specs ](https://inlinefiberglass.com/resources/technical-spec-download/) ## If You Are a Builder, Contractor, or Developer Outside the immediate Toronto area? Inline products are available through a network of authorized dealers in select markets. Dealers may assist with product selection, quoting, ordering, and local project coordination depending on your region. [ Find a dealer ](https://inlinefiberglass.com/dealers/) ## If You Are Looking for Service or Parts For service, warranty, or parts questions, use the service request path instead of a sales or showroom inquiry. This helps the right team review your request and respond with the next step. [ Submit a Service Request ](https://inlinefiberglass.com/contact/service-request/) ## If You Want to Become a Dealer Interested in carrying Inline fiberglass windows and doors? Submit a dealer inquiry with your market, business details, and product interest. [ Become a Dealer ](https://inlinefiberglass.com/dealer-partnership-inquiry/) ## Not Sure Which Location Path to Use? Tell us where your project is and what you need. Inline will help route you to the right next step, whether that is the showroom, a quote request, a dealer, technical support, or service. [ Find an Inline Dealer ](https://inlinefiberglass.com/dealers/) [ Book a Showroom Visit ](https://inlinefiberglass.com/book-showroom-visit/) ## Common Questions About Inline Fiberglass Locations Find clear answers to common questions about Inline Fiberglass locations. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) Is every dealer location owned by Inline Fiberglass? No. Authorized dealers are regional partners, not automatically Inline-owned branches. Dealer pages should clearly identify them as authorized dealers and avoid suggesting they are corporate Inline offices. Can I buy Inline Fiberglass products outside Toronto? Yes, depending on your location and product needs. Some customers work through Inline directly, while others may be routed to an authorized dealer. Use the dealer locator or submit a quote request with your project location. Do Inline dealers install windows and doors? Installation support may vary by dealer and region. Some dealers may offer or coordinate installation, while others may focus on product ordering and project support. Contact your local dealer or Inline to confirm the right path for your project. Who handles service requests? Service and parts requests should go through the service request path. If your product was purchased through a dealer, Inline or the dealer may help route the request based on the product, location, and issue. Do you serve my city in the GTA? Inline supports inquiries across the GTA, including Toronto, Etobicoke, Mississauga, Vaughan, Markham, Oakville, Richmond Hill, and North York. Submit your project location with your quote request so the team can confirm the next step. Can I visit the showroom before requesting a quote? Yes. A showroom visit can help you review product options before finalizing a quote request. For the best experience, book ahead and bring any relevant project details, measurements, drawings, or photos. What should I include when contacting Inline? Include your name, contact details, project location, product type, timeline, and a short description of the project. If available, include drawings, photos, or measurements. --- ### [Dealer Partnership Inquiry](https://inlinefiberglass.com/dealer-partnership-inquiry/) **Published:** June 16, 2026 **Author:** anthony@webhaven.ca **Content:** # Dealer Partnership Inquiry Explore dealer opportunities partnership details with a fiberglass manufacturer focused on long-term growth. [ Submit a Dealer Inquiry ](#form) [ Explore Inline Products ](https://inlinefiberglass.com/products/) ## Start the Conversation About Becoming an Inline Dealer A strong window dealer partnership starts with the right fit. This inquiry form is for window dealers, building product suppliers, distributors, showrooms, and trade-focused businesses interested in representing Inline Fiberglass products in their market. Use this form to tell us: - Your business type - Your service area or desired territory - Your experience with windows, doors, or building products - High-performance and Passive House project needs - Whether you have showroom or display capability - Which Inline product categories you are interested in After you submit your inquiry, the Inline team will review your information and follow up with the appropriate next step. [ Submit a Dealer Inquiry ](#form) ## Why Dealers Consider Inline Fiberglass Inline Fiberglass is not a generic window and door brand. The company is focused on fiberglass windows and doors, with products built around durability, comfort, energy efficiency, and clean design. ## A focused fiberglass product line Inline’s product offering includes fiberglass windows, fiberglass entrance doors, sliding patio doors, and high-performance product options for demanding residential and commercial projects. This supports dealers who want to offer more than commodity window and door products. ## Product depth for buyer needs Dealers can speak to homeowners, builders, architects, developers, and commercial buyers with a product range that includes window series, entrance doors, sliding patio doors, glass options, colours, grilles, hardware, and technical documentation. ## Support for premium projects Inline products are positioned for buyers who care about long-term performance, design flexibility, and technical confidence. This helps dealers serve customers who are comparing fiberglass against vinyl, aluminum, wood, or other window and door options. ## Dealer-network growth Inline’s website strategy includes dealer locator pages, regional dealer pages, and dedicated dealer inquiry routing to support market expansion and lead routing. [ Submit a Dealer Inquiry ](#form) ## Is This Dealer Partnership a Good Fit? Inline dealer partnership inquiries are best suited for businesses that already serve homeowners, builders, contractors, architects, developers, or commercial project teams. This form is not meant for general sales inquiries, warranty requests, or homeowner quote requests. Those should be routed through the appropriate quote, sales, or service form. **You may be a good fit if your business:** - Sells windows, doors, building envelope products, or related construction materials - Serves a defined local or regional market - Has experience with premium or performance-focused products - Can support customer education during the selection process - Has showroom, display, or product presentation capability - Understands the importance of accurate measurements, specifications, and project coordination - Wants to offer fiberglass window and door products [ Submit a Dealer Inquiry ](#form) ## Choose the Path That Fits Your Project Whether you’re upgrading a home, specifying a project, or coordinating a build, the 600 Series offers fiberglass durability, energy-efficient glass options, and flexible configurations to support a wide range of project goals. ## Fiberglass Windows Inline offers multiple fiberglass window series for different applications, including tilt and turn, casement, awning, fixed, horizontal slider, single hung, and double hung window options. **Best fit for:** Residential replacement, custom homes, commercial projects, high-performance building needs, and buyers looking for durability and energy efficiency. [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) ## Fiberglass Entrance Doors Inline’s entrance door offering supports homeowners and project teams looking for durable, energy-efficient, design-forward entry solutions. **Best fit for:** Premium residential projects, renovation upgrades, custom entryways, and curb-appeal-focused projects. [ Explore Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) ## Sliding Patio Doors Inline sliding patio doors support large openings, modern design, outdoor access, and high-performance project goals. **Best fit for:** Residential projects, commercial applications, modern homes, patios, large openings, and performance-focused specifications. [ Explore Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) ## High-Performance / Passive House Dealers working with architects, builders, or Passive House-focused buyers can use Inline’s product documentation and technical support to confirm the right product fit. **Note:** Certification and performance claims should be confirmed before being used in sales materials. Request Product Information ## Help Us Understand Your Business The more complete your inquiry is, the easier it is for the Inline team to review your fit and respond properly. Please be ready to provide: - Company and Contact name - Email, phone number and website - Business type and years in business - Service area or desired territory - Product categories currently sold - Current customer types served - Showroom or display capability - Installation or contractor relationships - Product categories of interest - Notes about your market opportunity - Optional file upload for company profile, showroom photos, or supporting documents [ Submit a Dealer Inquiry ](#form) ## What Happens After You Submit a Dealer Inquiry? ## 1. Submit your business details Tell us about your company, territory interest, experience, and product categories of interest. ## 2. Inline reviews your inquiry The Inline team will review your market, business fit, and available information. ## 3. The right next step is confirmed If there appears to be a potential fit, Inline will contact you to discuss product interest, territory questions, dealer requirements, and next steps. ## 4. Product and support details are reviewed Qualified dealer conversations may include product categories, documentation, showroom/display needs, sales support, warranty/service routing, and onboarding expectations. ## Interested in a Window Dealer Partnership? Tell us about your business, market, and product interest. The Inline Fiberglass team will review your dealer partnership inquiry and follow up with the appropriate next step. [ Submit a Dealer Inquiry ](#form) [ Explore Inline Products ](https://inlinefiberglass.com/products/) ## Common Questions About Dealer Partnership Find clear answers to common questions about dealer partnerships with Inline Fiberglass. [ Submit a Dealer Inquiry ](#form) Is Inline Fiberglass accepting new dealer inquiries? Inline welcomes dealer partnership inquiries from qualified businesses interested in representing fiberglass window and door products. Availability may depend on territory, business fit, product category, and market needs. Who can submit a dealer partnership inquiry? Window dealers, door dealers, building product distributors, showrooms, contractors, builders, and trade-focused businesses may submit an inquiry. The form is intended for businesses, not homeowners requesting a project quote. What territories are available? Territory availability depends on the current dealer network, market coverage, and Inline’s growth priorities. Submit your service area and desired territory so the team can review your inquiry. Do I need a showroom to become a dealer? A showroom or display area may be helpful, especially for premium window and door products, but requirements may vary by market and partnership type. Use the form to explain your current display capability or future plans. What products can dealers carry? Dealer product interest may include fiberglass windows, entrance doors, sliding patio doors, and high-performance product options. Inline will confirm product fit, availability, and documentation during the review process. Does Inline provide product support? Inline’s website includes stronger product documentation, technical resources, dealer routing, and clearer support pathways for different buyer types. Specific dealer support details should be confirmed during the partnership review. How are service or warranty requests handled? Service and warranty routing should be clearly defined during dealer onboarding. The website strategy separates dealer, sales, quote, and service requests to avoid routing the wrong inquiry to the wrong team. ## Submit a Dealer Partnership Inquiry Interested in becoming an Inline Fiberglass dealer or distributor? Complete the form below and tell us about your business. Become a dealer Contact First Name Email Phone/Mobile Company Name Business location Territory / Market of Interest Products of Interest? Product Needed: - Select -DealerDistributorBuilderContractorShowroomOther Message I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Service Request](https://inlinefiberglass.com/contact/service-request/) **Published:** June 16, 2026 **Author:** anthony@webhaven.ca **Content:** # Inline Fiberglass Service Request Request support for warranty questions, service needs, replacement parts, or product-related inquiries. [ Submit a Service Request ](#form) [ Contact Us ](https://inlinefiberglass.com/contact/) ## Request Service, Parts, or Product Support Need service, parts, or product support for an Inline Fiberglass window or door? Submit the form below with as much detail as possible so our team can review your request and guide you to the next step. To help us respond efficiently, please include your product type, issue description, building type, location, photos, and any available work order or dealer information. [ Submit a Service Request ](#form) ## Help Us Review Your Request Faster Inline Fiberglass service requests are easier to review when the submission includes clear product and issue details. Before submitting, please gather any information you have available. **Important note:** Warranty coverage and service routing may depend on the product, project history, dealer involvement, installation details, and warranty terms. Submit the form and Inline will review the information provided. **Please include:** - Product type: window, entrance door, sliding patio door, or parts request - Product series, if known - Issue type: glass, hardware, screen, frame, seal, operation, finish, water/air concern, or other - Project address or service location - Building type: single-family home, multi-unit residential, commercial, institutional, or other - Installation height or access details, if relevant - Photos or short videos showing the issue - Original work order, invoice, dealer name, or purchase details, if available [ Submit a Service Request ](#form) ## What Type of Service Request Do You Need? ## Window Service Request Use this form if you need support with an Inline Fiberglass window, including operation concerns, glass issues, hardware questions, screen concerns, frame questions, or general product service. Helpful details to include: - Window type or series, if known - Room or location in the building - Photos from inside and outside - Close-up photos of the issue - Notes about when the issue started ## Door Service Request Use this form for support related to Inline Fiberglass entrance doors or sliding patio doors, including operation, hardware, locking, glass, frame, threshold, or finish questions. Helpful details to include: - Door type: entrance door or sliding patio door - Approximate size or configuration - Photos of the door, frame, sill, hardware, and issue area - Notes about whether the concern is constant or seasonal ## Parts Request Use this form if you are looking for replacement parts or product components for an Inline Fiberglass window or door. Helpful details to include: - Product type and series, if known - Part type needed - Photos of the existing part - Any numbers, labels, or identifying marks - Original work order or dealer information, if available ## Warranty Review Use this form if you believe your issue may be warranty-related. Inline will review the details provided and advise on the appropriate next step. Helpful details to include: - Original purchase or project information - Installation location - Photos of the issue - Work order, invoice, or dealer name - Notes about when the issue started ## Dealer or Installer Routed Service If your Inline product was purchased through a dealer, distributor, builder, or contractor, please include their name and contact details if available. This helps Inline understand the project history and route the request correctly. Helpful fields: - Dealer or company name - Original salesperson or contact - Project name or address - Installation date, if known [ Submit a Service Request ](#form) ## After You Submit Your Service Request A clear process from submission to follow-up ## 1. We review your project details Our team will look at the information you submitted, including your project type, location, product interest, timeline, and any notes you provided. ## 2. We may ask for more information For some projects, we may need photos, drawings, rough measurements, product preferences, or additional details before preparing the next step. ## 3. We help route your request Depending on your project, we may guide you toward the right product, showroom visit, spec support, or quote process. Inline installs directly and offers turnkey replacement service, but regional or dealer-related exceptions should be confirmed where applicable. ## 4. You receive the next step A member of the Inline team will contact you as soon as possible to help move your fiberglass window or door project forward. The more complete your request is, the easier it is for Inline to understand the issue and direct it to the right person. ## Submit a Service Request Please complete the form below. Fields marked with an asterisk are required. Service and parts Subscribe First Name Last Name Phone/Mobile Email I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther Request Type: - Select -ServiceWarrantyPartsMaintenanceOther Product Type: - Select -WindowsEntrance DoorsSliding DoorsPassive HouseCommercialNot sure Product Name and Series Order / Invoice Number Dealer or Installer Name Address Address Line 1 Address Line 2 City State Zip Code Country Select CountryAfghanistanAland IslandsAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBonaire, Saint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBritish Virgin IslandsBruneiBulgariaBurkina FasoBurundiCabo VerdeCambodiaCameroonCanadaCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos (Keeling) IslandsColombiaComorosCook IslandsCosta RicaCroatiaCubaCuraçaoCyprusCzech RepublicDemocratic Republic of the Congo (Kinshasa)DenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEswatiniEthiopiaFalkland IslandsFaroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuamGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and McDonald IslandsHondurasHong KongHungaryIcelandIndiaIndonesiaIranIraqIrelandIsle of ManIsraelItalyIvory CoastJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKosovoKuwaitKyrgyzstanLaosLatviaLebanonLesothoLiberiaLibyaLiechtensteinLithuaniaLuxembourgMacao S.A.R., ChinaMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMartiniqueMauritaniaMauritiusMayotteMexicoMicronesiaMoldovaMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNetherlandsNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorth KoreaNorth MacedoniaNorthern Mariana IslandsNorwayOmanPakistanPalauPalestinian TerritoryPanamaPapua New GuineaParaguayPeruPhilippinesPitcairnPolandPortugalPuerto RicoQatarRepublic of the Congo (Brazzaville)RomaniaRussiaRwandaRéunionSaint BarthélemySaint HelenaSaint Kitts and NevisSaint LuciaSaint Martin (Dutch part)Saint Martin (French part)Saint Pierre and MiquelonSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia/Sandwich IslandsSouth KoreaSouth SudanSpainSri LankaSudanSurinameSvalbard and Jan MayenSwedenSwitzerlandSyriaTaiwanTajikistanTanzaniaThailandTimor-LesteTogoTokelauTongaTrinidad and TobagoTunisiaTurkmenistanTurks and Caicos IslandsTuvaluTürkiyeUgandaUkraineUnited Arab EmiratesUnited Kingdom (UK)United States (US)United States (US) Minor Outlying IslandsUnited States (US) Virgin IslandsUruguayUzbekistanVanuatuVaticanVenezuelaVietnamWallis and FutunaWestern SaharaYemenZambiaZimbabwe Image Upload Choose File Issue description I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. ## Common Questions About Service Requests Find clear answers to common questions about Inline Fiberglass service requests. [ Questions? Contact Us ](https://inlinefiberglass.com/contact) What information should I include with my Inline Fiberglass service request? Include your contact information, service location, product type, issue description, photos, and any available work order, invoice, dealer, or builder information. Clear photos and project history help the team review your request more efficiently. Do I need my original work order number? Include it if you have it. If you do not have a work order number, submit the form with as much other detail as possible, including the project address, approximate installation date, dealer or builder name, and photos. Can I submit a parts request through this form? Yes. Use this form for Inline Fiberglass parts requests. Include photos of the part, the product it belongs to, and any identifying information available. Is this the right form for a new quote? No. If you are planning a new window or door project, use the Request a Quote or Sales Inquiry form. This page is for service, parts, warranty review, and support for existing Inline Fiberglass products. Does submitting this form confirm warranty coverage? No. Submitting a form starts the review process. Warranty coverage depends on the product, issue, project details, warranty terms, and supporting information. What if I bought through a dealer or builder? Please include the dealer, builder, contractor, or distributor name if available. This helps Inline understand the project history and route the request properly. Can I call instead? Yes. If your request is urgent or you are unsure what form to use, contact Inline directly from our contact page. For the fastest review, still prepare your product details, photos, and project information. --- ### [Book Showroom Visit](https://inlinefiberglass.com/book-showroom-visit/) **Published:** June 16, 2026 **Author:** anthony@webhaven.ca **Content:** # Book a Visit to Our Etobicoke Window and Door Showroom See Inline Fiberglass windows and doors up close before you request a quote. [ Book Showroom Visit ](#form) [ Call Inline Fiberglass ](tel:1-866-566-5656) ## Explore Fiberglass Windows and Doors at Our Etobicoke Showroom Visit our Etobicoke showroom to review fiberglass window styles, entrance doors, sliding patio doors, glass options, colours, grilles, hardware, and project details with our team. Whether you are planning a home renovation, custom build, commercial project, or high-performance window package, a showroom visit can help you compare options and make a more confident decision. **Showroom Address:** 30 Constellation Court Etobicoke, Toronto, ON M9W 1K1 [ Book Your Showroom Visit ](#form) ## Visit a Fiberglass Window Showroom in Etobicoke Choosing windows and doors from a website alone can be difficult. Frame style, sightlines, colours, glass options, hardware, and door configurations are easier to understand when you can see real product examples in person. At the Inline Fiberglass showroom in Etobicoke, you can get a closer look at the products used across residential, commercial, architectural, and high-performance projects. Our team can help you understand which product paths may fit your project and what information is needed to move toward a quote. This page is for local buyers in Toronto, Etobicoke, Mississauga, Vaughan, North York, Markham, Oakville, Richmond Hill, and surrounding areas who want to review products before making a decision. ## Why Visit the Showroom? A showroom visit is especially helpful when you want to compare product details that are hard to judge online. Inline Fiberglass is built around fiberglass windows and doors, not a long list of unrelated building products. That focus helps our team provide clear product guidance for homeowners, builders, architects, developers, and dealers. **During your visit, you can review:** - Fiberglass window styles and frame profiles - Entrance door and sliding patio door options - Glass, grille, colour, and hardware choices - Productsfor renovations, custom homes, and commercial projects - High-performance and Passive House product pathways - Next steps for quotes, measurements, drawings, or documents [ Book Your Showroom Visit ](#form) ## What You Can Review During Your Visit ## Fiberglass Windows Explore Inline’s fiberglass window options for homes, custom builds, commercial projects, and performance-focused buildings. Depending on your project needs, our team can help you compare operating styles, fixed windows, ventilation options, sightlines, and available performance paths. **Helpful links:** - [ Explore Fiberglass Windows ](https://inlinefiberglass.com/products/fiberglass-windows/) - [ Compare Window Series ](https://inlinefiberglass.com/resources/window-series-comparison-guide/) - [ Request a Window Quote ](https://inlinefiberglass.com/request-a-quote/) ## Fiberglass Entrance Doors Review entrance door design options, glass configurations, colour possibilities, sidelites, transoms, and other details that affect curb appeal, comfort, and long-term performance. **Helpful links:** - [ Explore Entrance Doors ](https://inlinefiberglass.com/products/fiberglass-doors/4500-series-entrance-doors/) - [ Request a Door Quote ](https://inlinefiberglass.com/request-a-quote/) ## Sliding Patio Doors See how fiberglass sliding patio doors can support larger openings, natural light, energy performance, and indoor-outdoor access for homes and commercial spaces. **Helpful links:** - [ Explore Sliding Patio Doors ](https://inlinefiberglass.com/products/fiberglass-doors/600-series-sliding-patio-doors/) - [ Request a Sliding Door Quote ](https://inlinefiberglass.com/request-a-quote/) ## Glass, Colours, Grilles, and Hardware Use your visit to narrow down design and performance choices before requesting a quote. Bring photos, inspiration images, drawings, or measurements if you have them. **Helpful links:** - [ View Options ](https://inlinefiberglass.com/products/fiberglass-windows/options/) - Talk to a Product Specialist ## A Practical Product Review, Not a High-Pressure Appointment Your showroom visit is meant to help you understand your options and decide on the right next step. ## 1. Tell Us About Your Project Share what you are planning: replacement windows, entrance doors, sliding doors, a custom home, a commercial project, or a high-performance build. ## 2. Review Product Options We will help you compare relevant fiberglass window and door options, including styles, configurations, colours, glass packages, and product paths. ## 3. Discuss Quote Next Steps If you are ready to move forward, our team can explain what information is needed for a quote, such as project location, rough measurements, photos, drawings, product needs, and timeline. ## 4. Get Routed to the Right Next Step Depending on your project, the next step may be a quote request, technical document request, dealer conversation, or follow-up with Inline’s team. [ Book Your Showroom Visit ](#form) ## Bring Anything That Helps Us Understand the Project You do not need to have every detail finalized before visiting. Still, the more context you bring, the easier it is for the team to guide you. Helpful items include: - Photos of your current windows or doors - Rough measurements - Architectural drawings or plans, if available - Inspiration photos or style preferences - Product types you are considering - Project location and Target timeline - Builder, architect, or contractor details, if applicable For commercial, Passive House, or spec-driven projects, bring drawings, schedules, performance goals, or any product requirements you already have. ## Inline Fiberglass Showroom Location **Address:** 30 Constellation Court Etobicoke, Toronto, ON M9W 1K1 **Phone:** [(416) 679-1171](tel:416-679-1171) **Toll-Free:** [1-866-566-5656](tel:1-866-566-5656) **Email:** <info@inlinefiberglass.com> [ Book Your Showroom Visit ](#form) ## Ready to See Inline Products in Person? Visit the Inline Fiberglass showroom in Etobicoke to compare fiberglass windows, entrance doors, sliding patio doors, and design options before requesting a quote. Tell us a little about your project and preferred visit time. Our team will follow up with the next step. [ Book Showroom Visit ](#form) [ Request a Free Quote ](https://inlinefiberglass.com/request-a-quote/) ## Common Questions About Visiting Our Showroom Find clear answers to common questions about visiting the Inline Fiberglass showroom. [ Book Showroom Visit ](#form) Do I need an appointment to visit the showroom? Appointments are recommended so the right team member can be available to help you review your project and product options. Use the form on this page to request a visit. Where is the Inline Fiberglass showroom? The showroom is located at 30 Constellation Court in Etobicoke, Toronto, Ontario. What can I see during a showroom visit? You can review fiberglass window and door product options, including window styles, entrance doors, sliding patio doors, glass options, colours, grilles, and hardware. What should I bring to my appointment? Bring photos, rough measurements, drawings, inspiration images, project location, and your expected timeline if you have them. These details help the team provide more useful guidance. Can I request a quote during or after the visit? Yes. If you are ready to move forward, the team can explain what information is needed to begin the quote process. Can architects, builders, or contractors book showroom visits? Yes. The showroom can support homeowners as well as architects, builders, contractors, developers, and commercial project teams. Can I discuss Passive House or high-performance products during a visit? Yes. Bring any performance goals, drawings, or project requirements you have. Inline can help route you toward the right product information and documentation. Product-specific certification details should be confirmed with the team for your project. How long does a showroom visit take? Most visits should be planned for enough time to review your project, compare product options, and discuss next steps. ## Book Your Showroom Visit Use the form below to request a showroom appointment. Our team will review your request and follow up with the next step. Book showroom visit Notify First Name Email Phone/Mobile I am a: - Select -HomeownerArchitectBuilderDeveloperDealerOther Message I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. Submit We respect your privacy and will only use your details to respond to your request. --- ### [Accessibility](https://inlinefiberglass.com/accessibility/) **Published:** June 22, 2026 **Author:** anthony@webhaven.ca **Content:** # Inline Accessibility Plan Continue reading below for the websites accessibility plan [ Read More ](#article) ## Accessibility Statement At Inline Fiberglass, we are committed to meeting the needs of individuals with disabilities and to removing barriers to accessibility in accordance with the Accessibility for Ontarians with Disabilities Act (AODA). We are dedicated to treating all individuals with dignity, independence, and respect while providing equal access to our products, services, facilities, and employment opportunities. ## Employment Inline Fiberglass notifies job applicants that accommodations are available for individuals with disabilities throughout the recruitment and selection process. When accommodation requests are made, we work directly with applicants to identify and provide appropriate accommodations based on their individual needs. We develop individualized accommodation plans and return-to-work processes for employees who require workplace accommodations due to a disability. We also consider the accessibility needs of employees with disabilities during performance management, career development, and advancement opportunities. Where appropriate, accessible formats and communication supports are provided to ensure employees can fully participate in workplace processes. ## Accessibility Initiatives Inline Fiberglass maintains an accessibility strategy designed to improve opportunities for individuals with disabilities and contribute to a more inclusive and accessible Ontario. We provide accessibility and customer service training to employees, volunteers, and any individuals who interact with the public or represent Inline Fiberglass. Training is also provided to those involved in developing company policies, procedures, and practices related to the delivery of our products and services. Accessible formats and communication supports are available upon request for publicly available information, in accordance with the Accessibility for Ontarians with Disabilities Act. We inform the public of the availability of these accommodations and work with individuals requesting accessible information to determine the most appropriate format to meet their needs. When constructing or making significant modifications to public spaces, including showrooms and customer-facing areas, Inline Fiberglass follows applicable accessibility requirements and design standards to support barrier-free access. ## Training Inline Fiberglass has provided accessibility and customer service training to its employees and maintains an ongoing training process for new team members. Accessibility awareness, accommodation practices, and customer service standards form part of our commitment to creating an inclusive environment for employees, customers, and visitors. --- ### [Careers](https://inlinefiberglass.com/about/careers/) **Published:** June 22, 2026 **Author:** anthony@webhaven.ca **Content:** # Careers at Inline Fiberglass Build your career with a focused fiberglass window and door manufacturer. [ Submit Your Resume ](#form) [ Learn More ](#details) ## Work With a Team That Builds Real Products Inline Fiberglass is not a generic window company. Our work is built around fiberglass windows and doors, with a focus on long-term performance, durability, energy efficiency, and clean design. That focus creates opportunities for people who want practical, hands-on work and a clear role in the production of real building products. From the shop floor to customer support, every department helps move a project from product design and manufacturing to delivery, service, and support. Whether you have experience in window manufacturing, production, finishing, service, sales, or office administration, Inline offers a workplace where quality and consistency matter. [ Submit Your Resume ](#form) ## A Stable Manufacturer With a Specialized Focus Inline Fiberglass has built its reputation around one core material: fiberglass. The company’s strongest positioning is its fiberglass-only focus, manufacturing control, and ability to serve homeowners, architects, builders, developers, dealers, and commercial buyers. Our work supports a wide range of project needs, including: - Fiberglass windows - Fiberglass Doors - High-performance window and door systems - Residential and Commercial projects - Dealer-supported projects Behind every finished product is a coordinated team. Manufacturing, painting, assembly, service, sales, purchasing, logistics, administration, and technical support all play a role in delivering the final result. ## Career Paths at Inline Fiberglass Opportunities Across Manufacturing, Service, and Operations ## Manufacturing and Production Our manufacturing team helps turn raw materials and components into fiberglass window and door systems. This work may include production support, material handling, machine operation, quality checks, and general shop-floor coordination. **Good fit for people who:** Like hands-on work, follow process carefully, and take pride in building products that must perform in real homes and buildings. ## Painting and Finishing Our painting and finishing work supports the look, durability, and consistency of Inline products. This area may involve surface preparation, coating support, finish inspection, and careful handling of completed parts. **Good fit for people who:** Have an eye for detail, work carefully, and understand that finish quality affects both appearance and customer confidence. ## Assembly Our assembly team helps bring window and door systems together. This work may involve frames, glass, hardware, seals, fasteners, and final product preparation. **Good fit for people who:** Are comfortable with tools, measurements, product details, and repeatable quality standards. ## Service and Support Our service team helps customers, dealers, and project partners with product questions, service requests, parts needs, and follow-up support. **Good fit for people who:** Communicate clearly, solve problems calmly, and understand the importance of service after the sale. ## Sales and Customer Support Our sales and customer support roles help homeowners, builders, architects, dealers, and commercial buyers understand their options and take the right next step. **Good fit for people who:** Can explain products clearly, ask good questions, and help customers feel confident without using pressure tactics. ## Administration, Purchasing, and Operations Our office and operations teams support the business behind the product. This may include purchasing, scheduling, coordination, documentation, customer communication, and internal team support. **Good fit for people who:** Are organized, reliable, detail-oriented, and comfortable keeping projects and information moving. ## What We Value At Inline Fiberglass, good work depends on practical standards, clear communication, and attention to detail. We value people who: - Show up prepared - Work safely - Follow process - Ask questions when something is unclear - Care about product quality - Want to learn how fiberglass window and door manufacturing works This is a workplace for people who take the job seriously. You do not need to know everything on day one, but you should be willing to learn, follow instructions, and do the work properly. ## Why Build Your Career With Inline? Build Your Career with a Team Focused on Quality, Performance, and Long-Term Growth ## Specialized Product Focus Inline is built around fiberglass windows and doors. That means employees are not jumping between unrelated product categories. The work has a clear focus. ## Real Manufacturing Environment This is hands-on work connected to real products, real projects, and real buildings. ## Residential and Commercial Exposure Inline supports homeowners, builders, architects, developers, dealers, and commercial buyers. That creates a wide range of project types and learning opportunities. ## Quality-Driven Work The company’s positioning depends on product consistency, durability, performance, and technical credibility. That makes quality important at every stage. ## Multiple Career Paths Inline’s team includes production, painting, assembly, service, sales, administration, purchasing, logistics, and technical support roles. ## Future Career Opportunities Inline Fiberglass may hire for roles across several departments, including: - Manufacturing and production - Painting and finishing - Window and door assembly - Service and parts support - Sales and customer support - Administration and office support - Purchasing and operations - Technical and product support Even if you do not see a perfect role listed, you can still submit your resume for future consideration. [ Submit Your Resume ](#form) ## How the Hiring Process Works Pultrusion is the process used to create strong fiberglass lineals for window and door frames. Unlike vinyl extrusion, which pushes heated plastic through a die, pultrusion pulls continuous fiberglass reinforcement through resin and a heated die. The result is a rigid fiberglass profile that can be cut, finished, and assembled into high-performance window and door systems. ## 1. Send Your Resume Use the form below to send your resume and tell us what type of role you are interested in. ## 2. We Review Your Experience Our team will review your background, skills, and department fit. ## 3. We Contact Matched Applicants If your experience matches a current or upcoming need, a member of our team will contact you about next steps. ## 4. Interview and Role Discussion For selected applicants, we will discuss the role, work expectations, schedule, experience, and fit. ## 5. Next Steps If there is a strong fit, our team will provide the next steps in the hiring process. ## Common Questions About Careers at Inline Fiberglass Find clear answers to common questions about careers at Inline Fiberglass. [ Submit Your Resume ](#form) Where is Inline Fiberglass located? Inline Fiberglass operates from its Toronto / Etobicoke facility. Applicants should confirm the work location, schedule, and commute requirements during the hiring process. What types of roles does Inline hire for? Inline may hire across manufacturing, painting, assembly, service, sales, administration, purchasing, operations, and technical support. Do I need window and door experience? It depends on the role. Some positions may require direct fenestration, manufacturing, service, or technical experience. Other roles may be suitable for applicants with transferable skills and a strong willingness to learn. Can I send my resume if there are no current job postings? Yes. You can submit your resume for future consideration. If your background matches a future opening, the team may contact you. What should I include with my application? Include your resume, contact details, the type of role you are interested in, relevant experience, and general availability. Does Inline hire for factory and office roles? Yes. Inline’s team includes both hands-on production roles and business support roles, including sales, service, administration, purchasing, and operations. Are hours the same for every role? No. Hours may vary by department and position. Confirm schedule expectations during the hiring process. How soon will I hear back after applying? Response timing may depend on current hiring needs. Inline may contact applicants whose skills and experience match an active or upcoming opening. ## Interested in Joining Inline Fiberglass? Send us your resume and tell us what kind of role you are looking for. Careers page form Subscribe First Name Last Name Email Phone/Mobile Resume Upload Choose File Candidate notes I consent to receive communications from Inline Fiberglass regarding my inquiry, including by email and telephone. I understand that I may withdraw my consent at any time by contacting Inline Fiberglass or using any unsubscribe options provided. 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