TempAssure Thermostatic cartridge measures and monitors the temperature of the water and automatically adjusts to maintain a more precise water temperature Soft, rubber spray holes allow you to easily wipe away calcium and lime build-up from the spray face of your showerhead and handshower with the touch of a finger Trim kit only, must order MultiChoice Universal rough-in separately to complete the unit Dial adjusts temperature - Handle adjusts volume 2.00 gpm @ 80 psi, 7.6 L/min @ 550 kPa maximum water usage Zinc