A waterproof shower floor membrane made from metal, layers of built-up roofing or single or multiple elastomeric membranes.
A waterproof "pan" placed beneath the floor tiles or concrete base of a shower that prevents leaking.
The metal receptacle below tiled shower floors.
A pan that is below the tile in the shower. It prevents leakage of water from the shower.
A waterproof barrier made of either lead or vinyl that is formed into the shape of a pan.