ReliaBilt 31-in x 17.5-in Frameless Replacement Glass Block Window in White | GBWV3218RB

Made from of 100% break-resistant 3-in glass. Fully assembled for easy installation into masonry, brick or wood openings. Wave glass pattern provides light and moderate privacy. Thermally efficient helps to reduce energy costs. Assembled with maintenance free silicone adhesive creating durability, consistency and strength. Rough openings should be 1/2-in to 2-in larger than the exact size of the window to be installed.