KOHLER K-8857 Bevel Flush actuator plate for 2"x4" in-wall tank and carrier systemFor use with the K 18829 NA 2"x4" in wall tank and carrier system, this durable flush actuator plate allows you to choose between 0. 8 or 1. 6 gallons per flush (gpf). Bevel offers a unique aesthetic that complements the geometries of the Veil wall hung toilet. For use with the K 18829 2" x 4" in wall tank and carrier system Large flush actuator plate opening can be removed for easy access to inner tank Dual flush actuator offers a choice of 0. 8 or