325XTFf (3-1/4" depth)
High Performance Thermal Aluminum Window System
Built for Everyday Comfort
The Capitol 325XTFF combines a 3-1/4" frame depth with a 34mm polyamide thermal break designed to help reduce heat transfer and support indoor comfort. Engineered for high-traffic commercial environments, it features heavy-duty aluminum construction for long-term structural integrity. Integrated options for screens and integral blinds with access panel deliver precise light control, natural ventilation, and effective acoustic buffering for a quieter interior.
High-Performance Thermal & Structural Design
- Enhanced Comfort Options: Optimize your interior environment with surface mounted Capitol screens for natural airflow and integral blinds for seamless light management, privacy control, and acoustic buffering.
- Boost Building Efficiency: The polyamide thermal break is designed to help reduce heat transfer. Computer simulation shows U-factors as low as 0.25 for selected 325XTFF fixed window glazing and blind sash options. Results depend on the selected configuration.
- Tested Structural Performance: The fixed and project-out configurations achieved Class AW-PG100 in the reviewed physical tests. See the performance summary for design pressure, air infiltration, and water penetration results.
- Commercial Grade Construction:
Built with commercial-grade materials and reinforced corner construction. Follow Capitol’s care and maintenance instructions.
Custom Solutions To Meet Your NeedsCustom arrangements and accessory integrations to meet aesthetic, functional, and performance requirements. |
|
Frame Finish
|
![]() |
Technical Specifications


At Capitol Aluminum & Glass Corp., we are committed to delivering top-tier architectural products. The Capitol 325XTFF High Performance Thermal Aluminum Window System reflects our dedication to quality, performance, and client satisfaction, providing a reliable and energy-efficient solution for your commercial window needs.
For detailed specifications, project-specific inquiries, or to request a quote, please contact us directly. Call (419) 483-7050 to speak with Project Specialist.
Experience the Capitol difference
– a promise of reliability and long-term satisfaction.
[ Tap or click an image to enlarge ]
We partner with OSC and TIPS purchasing cooperatives!
Downloads
CAD Detail Drawings






