Black Shower Niche Insert Tile Ready 16" X 32" Rectangle for Shower Wall Prefabricated Waterproof Double Shelves Recessed Niche for Shower Bathroom Storage. Double Layer Embedded Niche: The embedded niche consists of two layers and can be partitioned for storage, making your bathroom cleaner.The middle partition can move up and down, and you can freely decide the height of the two storage areas.
eBay