Schluter Kerdi-Board Shower Niche 12 x 20 in. 1 Shelf KB12SN305508A1 is the addition to your dream shower, providing a convenient shelf to hold your soaps and shampoos. This prefabricated shower niche is crafted from Schluter-KERDI-BOARD tile substrate panels, designed to serve as an all-in-one tile substrate, waterproof seal, and structural stabilizer. It simplifies the process of building shower niches by eliminating the need to form corners, saving you time and reducing labor costs. Enhance your shower construction with this efficient and durable niche solution and enjoy a seamless, professional finish. Model Number: KB12SN305508A1