Product details:

For use with the 2"x6" 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). For use with the 2"x6" in-wall tank and carrier system. Available in a variety of colors and finishes to match the toilet or faucet finish. 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 and installation video for more detailed information.