Product Selection Guide YKK AP PRODUCT YCW 750 XT IG High Performance Inside Glazed Thermally Broken Curtain Wall System YCW 750 SplineTech® Thermally Improved Storefront System 1600 - Wall System® 4 Reliance™-TC IG Series 4250T CURTAIN WALLS - PRODUCT COMPARISON EFCO KAWNEER OLD CASTLE BUILDING ENVELOPE US ALUMINUM - 1600 SS Reliance™-SS Series 3150/3250 (With custom mullions) YCW 752 Outside Glazed Thermally Improved Pressure Wall System YCW 752 OGP Outside Glazed Thermally Improved Pressure Wall System YCU 750 TU Thermally Broken Unitized Curtain Wall System - S-5600 2 " 1602 Wall Reliance™-LT Series 2200 1620 Curtain Wall System Reliance™-LT (Polyamide) - X-Therm® 8250 - Reliance Unit Wall™ - YUW 750 TU Unitized curtain wall system. X-Therm® 8250 2500 UT Unitwall™ Signature Series Unit Wall - Page-22 PS-1000-09 | Effective Date: September 23, 2022