Since 1873, Kohler has been a trusted name in the kitchen and bath industry. 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. Elevate your experience with KOHLER. Kohler® Toilet Tank and Carrier System, 0.8/1.6 gpf, In-Wall Mount, 47-1/2 in Height, 18-13/16 in Width, Vitreous China