With its clean, simple design and efficient performance, this KOHLER® Highline water-conserving toilet combines both style and function. An innovative 1.28-gallon flush setting provides significant water savings of up to 16,500 gallons per year, compared to an old 3.5-gallon two-piece elongated toilet, without sacrificing flushing power. The elongated bowl and chair-like height ensure comfortable use. Kohler® Toilet, 2-Piece, Highline® Comfort Height® Collection, 1.28 gpf Flush, Elongated Bowl, 16-1/2 in Rim Height, 14 in Rough-In, 2-1/8 in Trapway, Floor Mounting, Class Five® Flushing System, 3-1/4 in Flush Valve, 10-1/8 in W Bowl, 18-1/4 in W x 30-3/4 in D x 31-5/8 in H Overall, Vitreous China, Biscuit