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. This model features a unique tank liner that minimizes exterior condensation in humid environments. Kohler® Toilet, 2-Piece, Highline® Comfort Height® Collection, 1.28 gpf Flush, Elongated Bowl, 16-1/2 in Rim Height, 12 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, 18-1/8 in W x 31-1/4 in D x 29-3/4 in H Overall, Vitreous China, Biscuit