KOHLER K-10282-AK-CP Forte Single-Function Katalyst Showerhead, Polished Chrome Best-selling single-function wall-mount showerhead with Katalyst air-induction spray Katalyst air-induction technology maximizes the air/water mix for a powerful, even flow Infuses two liters of air per minute, delivering a voluptuous spray that clings to the body with larger, fuller water drops MasterClean(TM) sprayface resists hard water build up and is easy to clean 2.5 gpm (gallons per minute) flow rate