With its insulated tank, durable steel frame, large flush actuator opening, and adjustable height, this in-wall tank and carrier system provides unparalleled installation flexibility. The dual-flush actuator offers a choice of 0.8 or 1.28 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®, 28830-NA, Toilet Tank, 0.8 to 1.28 gpf Gallons per Flush, 3 in Flush Valve, Floor Mounting, 45-11/16 in Height, 20-1/2 in Width, Steel, Blue, Import