Designed to complement the smooth contours of the Veil(TM) wall-hung toilet, this flush actuator plate allows you to choose between 0.8 or 1.6 gallons per flush (gpf), signified by sleek recessed buttons in two different sizes. For use with K-18829-NA 2"x4" in-wall tank and carrier system. Dual flush actuator offers a choice of 0.8 or 1.6 gallons per flush (gpf). Large flush actuator plate opening can be removed for easy access to inner tank. See installation guide for more detailed information.