For 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). Iconic Memoirs designs have been incorporated into this actuator to complement the Memoirs wall-hung toilet. For use with K-18829-NA 2"x4" 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 1.6 gallons per flush (gpf). See installation guide for more detailed information.