Description Foam Square Niche 16×16 Inch This is a lightweight, high density polystyrene with a liquid waterproof coating. The niche is 100% waterproof and ready to tile out of the box. Square in shape, measures 15.75″ x 15.75″ with 4″ recess. 15.75″ x 15.75″ x 4″ 1/2″ Flange Thickness 100% Waterproof Square Shape Quantity (1)
