YES 45 TU/FT Thermal Storefront System YES 45 TU SHEAR BLOCK ASSEMBLY SHEAR BLOCK MOUNTING SCREWS HEAD TUBULAR MULLION HEAD MOUNTING SCREW INTERMEDIATE HORIZONTAL SHEAR BLOCK SILL END DAM HORIZONTAL/SILL MOUNTING SCREWS SILL FLASHING Page-4 02-1003-14 | Effective Date: January 10. 2022