WaterSense certification promotes water conservation Monitor pressure balance valve keeps water temperature within a safe +/-3degrees F (+/-1.6degrees C), helping to protect you from sudden changes in hot or cold water pressure Soft, rubber spray holes allow you to easily wipe away calcium and lime build-up from the spray face of your showerhead and hand shower with the touch of a finger Trim kit only, must order MultiChoice Universal rough-in separately to complete the unit Monitor 17 Series Tub & Shower Trim