This WaterSense(R)-labeled high-efficiency toilet combines water conservation with the versatile style of the Cimarron collection. A 1.28-gallon flush provides significant water savings of up to 16,500 gallons per year, compared to a 3.5-gallon toilet, without sacrificing performance. This toilet features innovative AquaPiston technology, a patented flush engine that delivers a fast, powerful, and virtually plug-free flush. An elongated bowl, positioned at the height of a standard chair, offers comfort and ease of use. An insulating tank liner helps prevent condensation on the outside of the tank. Two-piece toilet. Elongated bowl offers added room and comfort. Comfort Height® feature offers chair-height seating that makes sitting down and standing up easier for most adults. 1.28 gallons per flush (gpf). Standard left-hand Polished Chrome trip lever included. Insuliner® tank liner minimizes condensation on the tank when exposed to high humidity. Combination consists of the K-4309 bowl and the K-4421-U tank. Coordinates with other products in the Cimarron collection. Standard 12-inch rough-in.