Prefabricated vinyl shower niche is fully sealed for hassle-free, quick and easy installation 100% waterproof and leak-proof storage for shower necesseties Can be installed horizontally or vertically with adhesive for PVC panels and a silicone-based sealant Shower niche has overall dimensions of 17.5 in. x 15.5 in. x 3.75 in. with inner storage dimensions of 14 in. x 12 in. x 3.5 in. Available in the same finishes as the Palisade Tiles and Palisade Tile Shower Kits The Palisade shower niche perfectly match all Palisade finishes to add functionality and style to any Palisade shower installation. This waterproof accessory is made of durable PVC with a lacquer finish for lasting strength and easy maintenance. The shower niche slides into a pre-cut hole in shower wall and can be installed vertically or horizontally over Palisade tiles.