This water-saving version of the industry-leading Wellworth toilet brings graceful, streamlined design to the bath. At 1.28 gal per flush, this high-efficiency toilet conserves up to 16,500 gal of water per year, compared to a 3.5 gal toilet, without sacrificing performance. An elongated seat offers extra comfort. Kohler® Toilet, 2-Piece, Wellworth® Classic Collection, 1.28 gpf Flush, Elongated Bowl, 14-1/2 in Rim Height, 12 in Rough-In, 2-1/8 in Trapway, Floor Mounting, Class Five® Flushing System, 3 in Flush Valve, 10-1/8 in W Bowl, 19-5/8 in W x 28-1/4 in D x 30 in H Overall, Vitreous China, Biscuit