Moen T8341 Commercial Posi-Temp Pressure Balancing Tub/Shower System 2.5 gpm, Chrome Lever design for ease of use Vandal resistant Positemp pressure-balancing valve maintains water pressure and controls temperature Standard with handshower Moen posi-temp valve not included # valve 8370hd or 8371hd or 8372hd or 8373hd or 8374hd; sold separately required for operation