Clearly Secure 31 in. x 21.25 in. x 3.125 in. Frameless Vented Diamond Pattern Glass Block Window

REDI2SET glass block windows are the ideal basement replacement window; they also make great windows for bathrooms garages kitchens and entryways. Made of 100% real glass REDI2SET glass block windows are fully assembled for easy installation. Thick break-resistant glass enhances home security. Prismatic diamond glass pattern diffuses light and provides maximum privacy. Provides improved energy efficiency over old single-pane basement windows. Efficient sound barrier reduces noise from outside and helps keep homes quiet. Assembled in the USA by 1 of America’s oldest glass block companies. Easy to maintain vinyl hopper style Fresh-Air vent won’t peel rot or rust; it features an easy to replace screen that keeps insects out. Rough openings should be 0.5-in to 2-in larger than the actual window size.