Products High Performance Thermal XTherm™ XTherm Series 450X, 450G SpecificationsCAD Details 4 1/2" Heavy Commercial Projected/ Casement / Fixed Flush-Face Window - NFRC CMA Approved XTherm Series HX32 Single Hung (Tilt-Sash) SpecificationsCAD Details 3 1/4" High Performance Thermal Single Hung (Tilt-Sash) XTherm Series HX45 Double Hung Architectural Grade Window SpecificationsCAD Details 4 1/2" High Performance Thermal, Double Hung Architectural Grade Window XTherm Series SX45 SpecificationsCAD Details 4 1/2" High Performance Thermal, Horizontal Sliding Architectural Grade Window XTherm Series 450X, 450G SpecificationsCAD Details 4 1/2" Heavy Commercial Projected / Casement / Fixed Flush-Face Window - NFRC CMA Approved XTherm E-Lite SpecificationsCAD Details Interior Light Shelf XTherm E-Shade SpecificationsCAD Details3D Models EFCO Sunshade XTherm Series 2250i, 3250i, 4250i High Performance Thermal 2-1/2", 3-1/2", 4-1/2" Window XTherm Series 2250i, 3250i, 4250i High Performance Thermal 2-1/2", 3-1/2", 4-1/2" Window XTherm Series 2250i, 3250i, 4250i-XLT High Performance Thermal 2-7/8", 3-7/8", 4-7/8" Window XTherm Series 2250i, 3250i, 4250i-XLT "Historical" High Performance Thermal 2-7/8", 3-7/8", 4-7/8" Window XTherm Series 325X SpecificationsCAD Details3D Models 3 1/4" Heavy Commercial Projected / Casement / Fixed Flush-face Window - NFRC CMA Approved XTherm Series 403X (T) SpecificationsCAD Details 2" x 4 1/2" Thermal Storefront Framing XTherm Series 406X (T) SpecificationsCAD Details 2" x 6 1/2" Thermal Storefront Framing XTherm Series 645X 5-1/2" Window Wall System XTherm System 5500X SpecificationsCAD Details 2 1/2" Thermal E-Strut™ Curtain Wall - NFRC CMA Approved XTherm Systems 2 1/4" 5600 and 2 1/2" 5600 SpecificationsCAD Details Fiberglass Pressure Plate - NFRC CMA Approved