325 Series Fiberglass Casement Windows
Outward-opening fiberglass casement windows built for fresh air, clean views, and long-term performance.
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
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.
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
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.
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.
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.
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.
Encore Operator & Lock Package
The Encore option combines a folding operator handle with matching sash-lock hardware. Available finishes: White and Black.
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.
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.
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.
325 Series Drawings — CAD
Access CAD drawings to support project design, planning, and specification development.
Installation Guide — Single Unit
Review installation information for single 325 Series units.
Installation Guide — Coupled Units
Review installation information for coupled 325 Series configurations.
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.
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.
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