If you're looking for a fully waterproof and vapor-tight prefabricated shower niche, the Schluter KERDI-BOARD-SN is a great option. Made of Kerdi Board, this shower niche has a 3-1/2" depth and comes in the standard 12"x12" size. The Kerdi Board material is waterproof and mold resistant, so you don't have to worry about your shower niche leaking. And because it's prefabricated, the Schluter KERDI-BOARD-SN is easy to install. One great feature of the Schluter KERDI-BOARD-SN is that it comes with a shelf. This is perfect for storing shampoo, soap, or other shower essentials. If you're looking for a shower niche that is both attractive and functional, the Schluter KERDI-BOARD-SN is a great option.