KOHLER K-5413 Cue Flush actuator plate for 2"x 4" in-wall tank and carrier systemDesigned to complement the smooth contours of the Veil wall hung toilet, this flush actuator plate allows you to choose between 0. 8 or 1. 6 gallons per flush (gpf) for water savings. For use with the K 18829 2" x 4" in wall tank and carrier system Dual flush actuator offers a choice of 0. 8 or 1. 6 gpf (3. 0 or 6. 0 lpf) Large flush actuator plate opening can be removed for easy access to inner tank Eligible for consumer rebates in some