850 Series Single Hung Fiberglass Windows
Space-saving fiberglass single hung windows with traditional style and modern performance
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.
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
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
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 300 Series can be tailored to suit the performance, appearance, and documentation needs of your project.
01
Glass Options
Choose from available double glass options based on comfort, efficiency, budget, and project requirements. Low-E coatings, argon-filled cavities, and insulating glass options can help improve thermal performance of your fiberglass windows.
02
Colour Options
Inline offers a wide range of colour options, including standard and custom colour matching. This helps homeowners, architects, and builders match the window finish to the project’s exterior palette, interior design, or brand requirements.
03
Fixed Combinations
The fixed upper sash and half-screen exterior configuration can help decorative grilles remain more visually prominent. This makes the 850 Series useful for traditional homes, custom residential designs, and projects where grille details matter.
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.
850 Series Drawings — CAD
Access CAD drawings to support project design, planning, and specification development.
Installation Guide
Review installation information for single 850 Series units.
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.
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.
Tell Us About Your Window Project
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