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, its easy to find the design solution thats right for you.