An American classic, this Wellworth high-efficiency toilet tank reduces water consumption without compromising on flushing power. At 1.28 gallons per flush, this economical tank conserves up to 16,500 gallons of water per year compared to a 3.5 gal toilet. Its streamlined style matches with a coordinated bowl for a complete toilet. Kohler® Toilet Tank, Wellworth®, 1.28 gpf, Left Hand Lever Flush, 2-1/8 in Flush Valve, 12 in Rough-In, 13 in Height, 8 in D, Vitreous China, Biscuit