We can offer you different colors of buthtub deck. They are installed on the surface of buthtub. Moisture penetration of the crack between buthtub and surrounding wall can damage the walls or floor. The buthtub decks can avoid it. We are not a China bath manufacturer but we can also offer you hight quality buthtub deck, because we are strong in marble process. Each set include 4 pcs: 42”x15”(one short edge polished), 75”x4”(one long edge polished,2pcs), 34”x4”(unpolished ). Different edges and sizes are available.