YES 600 Thermal Clip Storefront System SCREW SPLINE ASSEMBLY SNAP IN FILLER SPLINE SCREWS SETTING BLOCK HEAD WATER DEFLECTOR JOINT PLUG INTERMEDIATE HORIZONTAL THERMAL SCREW SPLINE MULLION SILL FACE COVER SILL FLASHING The Screw Spline Assembly method uses a two piece vertical mullion. This allows the frame to be constructed in units and installed using screws driven through the back of the vertical mullions into the screw splines of the horizontal members. Effective Date: Aug 26, 2024 | 02-1005-05 Page-3