Moen TS312 Waterhill Posi Temp Shower Only Faucet, Chrome chrome finish to create a bright, highly reflective, cool grey metallic look lever design for ease of use PosiTemp pressure-balancing valve maintains water pressure and controls temperature 10-Inch diameter rain shower Moen Posi-Temp valve not included No. Valve 2510 or 2590 or 2570 or 2520. sold separately required for operation