250XTFf (2-1/2" depth)
High Performance Thermal Aluminum Window System
Smart Design, Lasting Value
The Capitol 250XTFF has a 2-1/2" frame depth for tight wall profiles, retrofit applications, and space-conscious new construction. Its aluminum construction and polyamide thermal break are designed to help reduce heat transfer. See the performance tables for the tested configurations and results.
Give your building a fresh look and occupants a more
comfortable place to work, learn, or gather. The 250XTFF combines the strength of aluminum with a thermally divided design to deliver everyday durability, indoor comfort, and lasting value for your investment.
Key Features & Benefits
- 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 0.26 for selected 250XTFF 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. |
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Frame Finish
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Technical Specifications


At Capitol Aluminum & Glass Corp., we are committed to delivering top-tier architectural products. The Capitol 250XTFF 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.
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