The EP wall-hung elongated toilet and duo fit in-wall 0.9 and 1.6 GPF tank system copper supply line is a complete toilet system less a toilet seat. The in-wall system provides you with the opportunity to save valuable floor space within your bathroom. The duo fit-in-wall tank system help makes conservation easy by providing a dual flush system with a highly efficient Dynamax tornado flush. The Dynamax tornado flush has a hole-free rim design that generates a centrifugal, cyclonic rinsing action with the option of 0.9 or 1.28 gallons of water. The ep bowl features a skirted design that is not only easier to clean but provides a sleek and modern aesthetic. The EP bowl is coated with a ceramic glaze that creates a slick surface to help prevent waste from sticking and keep the bowl cleaner for longer. The duo fit harness allows you to select a mounting height. This provides the opportunity for you to establish a comfortable bowl height for a wide array of individuals. The in-wall unit can support up to 880lbs when installed properly. If you want to enhance the installation with a washlet bidet seat, there is a pre-attached copper supply built into the system. You will additionally have to purchase a washlet connection kit to complete your washlet install.