The F Series Capped Curtain Wall is a high-performance stick-built façade solution designed for strength, precision, and thermal efficiency. Available in 2″ (F50++) and 2 3/8″ (F60++) mullion options, this system uses shear block construction with identical mullion and transom profiles for streamlined fabrication and installation.
A proprietary continuous interior gasket, paired with an extruded foam insulator, enables the F Series to achieve ultra-high thermal performance, even with glass thicknesses up to 1 7/8″. Multiple configuration options make it suitable for a wide range of architectural applications, from low- to high-rise projects.
Key Benefits of the F Series Capped Curtain Wall
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High Thermal Efficiency – Continuous interior gasket and foam insulation deliver exceptional energy performance.
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Flexible Mullion Options – Available in F50++ (2″) and F60++ (2 3/8″) mullions, with depths up to 12″.
- Multiple Glazing Styles – Offered as 4-Sided Captured, SSG, Toggle, Cassette Curtain Wall, and split mullion configurations.
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Simplified Fabrication & Installation – Identical mullion and transom profiles with shear block construction improve speed and accuracy on site.
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System Integration – Fully compatible with GUTMANN S70+ windows and S70SK Zero Sightline Vent for cohesive façade performance.
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Corner Design Flexibility – Choose capped corners for a bold framed look or SSG corners for a sleek, glass-to-glass aesthetic.

Tested To:
- ASTM E330
- ASTM E283
- ASTM E331
- NFRC 100