31 in. x 15.5 in. x 3.125 in. Frameless Wave Pattern Non-Vented Glass Block WindowPre-assembled glass block replacement windowGlass blocks are ideal for basements, showers, bathrooms and moreIncrease privacy, security, efficiency and appearance Clearly Secure Glass Block Windows come fully assembled to fit a variety of opening sizes and can enhance the comfort and appearance of any room. Glass Blocks are a special building material made of glass and laid similarly to brick or concrete block. For residential purposes glass block windows are commonly used as a basement replacement window but are also ideal for bathrooms, kitchens, sidelights, transoms, garages and much more. They are easily installed in any residential or commercial masonry opening and can be used in wood frame openings. Clearly Secure Glass block Windows are more difficult for would be thieves to penetrate and thus are considered a more secure alternative to traditional windows. Glass block windows are also considered more energy efficient when compared to traditional plate glass windows.Exterior Color/ Finish: WhiteFeatures: No Additional FeaturesFrame Type: No FrameGlass Pattern: Wave PatternGlass Type: Privacy GlassGlazing Type: Double-PaneGrid Pattern: No GridGrille Type: No GrilleIncluded: No Additional Items IncludedInterior Color/Finish Family: WhiteNumber of Grids: No GridProduct Weight (lb.): 40.35 lbReturnable: 90-DayShape: RectangleSolar Heat Gain Coefficient: .68U-Factor: .55Window Handing: No HandingWindow Type: BasementWindow Use Type: New Construction,ReplacementEnergy Star Qualified: Not QualifiedManufacturer Warranty: 10 year limitedGrid Width (in.): NoneProduct Depth (in.): 3.125 inProduct Height (in.): 15.50 inProduct Width (in.): 31.00 inRough Opening Height (in.): 16 inRough Opening Width (in.): 31.5 inWidth (in.) x Height (in.): 31.00 x 15.50