Kohler 8857-CP Bevel Flush Actuator Plate for 2"x4" in-Wall Tank and Carrier System Polished Chrome For use with k-18829-na 2"x4" in-wall tank and carrier system Currently available in CP with additional finishes available in later 2016 Large flush actuator plate opening can be removed for easy access to inner tank Dual flush actuator offers a choice of 0.8 or 1.6 gallons per flush (gpf) WaterSense toilets meet strict EPA flushing guidelines, including using at least 20 percent less water than 1.6-Gallon toilets