With its insulated tank, durable steel frame, large flush actuator opening, and adjustable height, this KOHLER® in-wall 0.8 or 1.6 gpf toilet tank and carrier system provides unparalleled installation flexibility. The dual-flush actuator offers a choice of 0.8 or 1.6 gpf, and this in-wall tank combines with compatible wall-hung toilet bowls and select flush actuator plates to create a complete toilet solution. With KOHLER®, it’s easy to find the design solution that’s right for you. Kohler®, 28829-NA, Tank, Transitional, 0.8 gpf Gallons per Flush, Wall Mounting, 45-11/16 in Height, 20-1/2 in Width, 3-1/8 in Depth, Steel