The San Souci one-piece toilet offers a sleek, contemporary design with a convenient chair-like height and elongated bowl for comfortable use. This toilet features innovative AquaPiston™ technology, a patented flush engine that delivers a fast, powerful and virtually plug-free flush. A 1.28 gal flush provides significant water savings of up to 16,500 gal per year, compared to a 3.5 gal toilet, without sacrificing performance. Kohler® Toilet, 1-Piece, Series: Comfort Height®, San Souci® Collection, 1.28 gpf Flush, Compact Elongated Bowl, 16-1/2 in Rim Height, 12 in Rough-In, 2-1/8 in Trapway, Floor Mounting, AquaPiston® Flushing System, 16-7/16 in W x 25-5/16 in D x 27-1/2 in H Overall, Metal, Ice Gray™