Redi niche Shelves give you efficient, clutter-free shower walls with no leaks. With over 30 models to choose from, you will find a style to fit your space in your shower, bathroom and the rest of your home ! . of course they the tile redi quality features you expect. Redi niche twofold deep-set, 16 ? . x 28 ? . h 4 ? . d modern design : tile set directly on niche surface easy-to-install water-proof and leak-proof.