Dual Flush : The buttons for dual flush allow you to choose between a low 0.8 gpf light flush or a high 1.6 gpf full flush. Carrier System: The 2x4 In-Wall toilet tank carrier is to be installed on 4" studs. Access to Plumbing: Removable flush plate for easy access to plumbing. Space Saving: With the water tank in the wall, the Wall-Hung toilet saves space in your bathroom and is aesthetically pleasing in design. Weight Capacity: 500 Pounds