Double-Hung Window Model ID: 8500 The Series 8500 double-hung window offers an attractive colonial exterior profile that gives your home a traditional appearance. This remarkably sturdy window is constructed to provide a lifetime of energy savings and low maintenance convenience. Its many features, including 7/8" insulated glass, tilt-in sashes for easy cleaning and rugged vinyl construction make this an excellent choice.		Frame Model ID 8500 Construction Frame/Sash Fusion Welded Frame and Sash Exterior Appearance Colonial Frame Profile Frame Features Not Applicable Frame Depth 3-1/4" Structural Performance Size: 44" x 62" - DP 45 Size: 48" x 80" - DP 30  Glass Model ID 8500 I.G. Thickness 7/8" Dual Pane Glass Type Clear Spacer Type Intercept® Warm Edge Glass Options LoE², LoE²/Argon, Tempered, Tinted, Obscure U Factor Clear Glass - 0.48 LoE² Glass - 0.35 LoE²/Argon - 0.32 LoE³ Glass - 0.35 LoE³/Argon - 0.31  Hardware Model ID 8500 Lock Type Cam Type Lock and Keeper Operating System Constant Force Balances Screen Cloth 18 x 16 Fiber Mesh Screen Frame Color Coordinated Roll Form  Options Model ID 8500 Color White or Beige Grille Type 3/4" Contoured, 13/16" Flat Grille, 7/8" or 1-1/4" SDL Extension Jambs Not Applicable Other Not Applicable  Size