Flusso 160.2410 3 Hole Deck Mount Roman Tub FaucetThree Hole Deck Mount Bathtub faucets have a separate hot and cold handle and are installed on the deck next to the edge of the bathtub with 3 drilled holes that are each about 4 inches apart. The faucet body and handles are all separate pieces with volume control valves concealed under the tub. DECK HOLE SIZE: All 3 Hole Deck Mount Roman Tub faucets from Flusso Faucets fit into the universal deck hole size of 1 3 8?. CRITICAL DIMENSIONS: Critical