Product Selection Guide CURTAIN WALLS - PRODUCT COMPARISON EFCO KAWNEER OLD CASTLE BUILDING ENVELOPE US ALUMINUM - 2250 L R Wall HP-225 Series 4500 5600 X-Therm 1600 UT Reliance™-HTC Series 3252 / 3252SG YCW 750 XTP High Performance Curtain Wall System Featuring Dual Thermal Barriers and Polyamide Pressure Plate 5600 X-Therm 1600 UT Reliance™-TC - YCW 750 OG Thermally Improved Outside Glazed Curtain Wall System S-5600 2-1/2" 1600 Wall System®1 Reliance™-OG Series 3250 YCW 750 OGP Thermally Improved Outside Glazed Curtain Wall System with Polyamide Pressre Plate S-5600 2-1/2" With Duracast® 1600UT Wall System®1 Reliance™-OG Series 3250 YCW 750 SSG Thermally Improved Structural Silicone Glazed Curtain Wall System S-5600 2-1/2" 1600 Wall System®2 Reliance™-SSG Series 3150 S-5900 1600 Wall System®3 Reliance™-IG SS Series 4250 YKK AP PRODUCT YCW 700 Thermally Improved Outside Glazed Curtain Wall System YCW 750 XT High Performance Curtain Wall System Featuring Dual Thermal Barriers YCW 750 IG Thermally Improved Inside Glazed Curtain Wall System Page-20 PS-1000-08 | Effective Date: April 28, 2020