YES 600 Thermally Broken, Front Loading Storefront System STOREFRONT SYSTEM Product Description The YES 600 is a thermally broken front loaded storefront system for 1" insulating glass. The system also accepts 1/4" monolithic glass with glazing adaptors. The thermal break is achieved by employing a unique nylon clip that locks the exterior and interior members together. This method of attaching face members also allows separate finishes to be used on the system. Optional face caps are available as well as an SSG Vertical Mullion option. Product Options & Features n 1-3/4" Face by 4-1/2" or 6" Overall Depth n Outside Glazed n Screw Spline or Shear BlockâAssembly n Nylon Clip Design Eases Installation and Reduces Labor Costs n Separate Exterior/Interior Finish Options n Integral Entrance Door Frames