The total RP compact wall-hung d-shape toilet and duo fit in-wall 0.9 and 1.6 GPF tank system with copper supply line is a complete toilet system designed for luxury within tight spaces. The in-wall system provides you with the opportunity to save up to 9 inches of valuable floor space within your bathroom. The compact d-shape design of the RP bowl allows for extra space savings without compromising the comfort of a traditional elongated seat. The RP compact bowl features a skirted design that is not only easier to clean but provides a sleek and modern aesthetic. The duo fit-in-wall tank system help makes conservation easy by providing a dual flush system with Toto's highly efficient flush. The 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 RP bowl is coated with Toto's Cefiontect ceramic glaze that creates a slick surface to help prevent waste from sticking and keep the bowl cleaner for longer. This feature, coupled with the flush, assists to reduce the frequency of toilet cleanings, minimizing the usage of water, harsh chemicals, and time required for cleaning. The duo fit harness allows you to select a mounting height of 15 to 19 inches. This provides the opportunity for you to establish a comfortable bowl height for a wide array of individuals.