An American classic, this KOHLER® Wellworth high-efficiency toilet tank reduces water consumption without compromising on flushing power. Its 1.28-gallon flush setting provides significant water savings of up to 16,500 gallons per year compared to a 3.5-gallon toilet, making this tank an economical addition to your house. This Wellworth 1.28 gpf toilet tank matches a coordinated bowl for a customized ensemble. Kohler® Toilet Tank, Wellworth®, 1.28 gpf, Right Hand Lever Flush, 3-1/4 in Flush Valve, 12 in Rough-In, 13-15/16 in Height, 18 in Width, 8-1/2 in D, Vitreous China, White