KOHLER K-680-KS-NA MasterShower Thermostatic Valve High-temperature limit stop for added safety and elimination of scalding Stacked valve allows for separate control of water temperature and flow Delivers a high flow rate and consistent temperature control 1/2-Inch inlet Thermostatic valve allows bather to set and maintain precise temperature Factory-calibrated comfort setting at 104 degrees Fahrenheit High temperature safety stop ensures that water temperature does not exceed 120 degrees Fahrenheit