Upgrade your shower storage with this ready-for-tile triple-shelf niche set, combining 16"" x 16"" and 16"" x 20"" compartments in a sleek black design. Made from durable, Hcfc-free Xps foam with a three-layer structure, it s lightweight yet strong, supporting everyday bathroom essentials. The integrated, recessed design saves space and delivers a modern, built-in look for showers, bathrooms, kitchens, cabinets, or bookshelves. Pre-sealed with cement mortar and a waterproof coating, it offers 100% waterproof protection to keep walls dry and extend their life. A rough, meshed surface ensures superior tile adhesion for a flawless finish, while the movable partitions let you customize the interior layout to fit bottles, soaps, and accessories. Install horizontally or vertically using the included mounting kit for fast, hassle-free setup.