Kohler TS5320-4-BN Refinia(R) Rite-Temp(R) Shower Valve Trim with Lever Handle and 2.5 gpm showerhead, Vibrant Brushed Nickel Pressure-balancing diaphragm technology maintains outlet temperature within +/-3 degrees Fahrenheit during water pressure fluctuations Provides temperature regulation and automatic anti-scald protection Single handle controls both on/off activation and temperature setting Includes faceplate with ADA-compliant metal lever handle Includes single-function 2.5 gpm (gallons per minute) showerhead with Katalyst air-induction technology