With its clean, simple design and efficient performance, this Highline water-conserving toilet combines both style and function. An innovative 1.28 gal flush setting provides significant water savings of up to 16,500 gal per year, compared to an old 3.5 gal toilet, without sacrificing flushing power. The elongated seat 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, 10 in Rough-In, 2-1/8 in Trapway, Floor Mounting, Class Five® Flushing System, 10-1/8 in W Bowl, 18 in W x 31-1/4 in D x 29-1/2 in H Overall, Vitreous China, Biscuit