Wellworth toilets have been an American benchmark for style, innovation, and performance since 1936. This Wellworth high-efficiency toilet delivers significant water savings with a 1.28-gallon flush setting that saves up to 16,500 gallons per year, compared to an old 3.5-gallon toilet, without sacrificing flush power. This model includes an insulated tank liner to help prevent condensation on the outside of the tank, and an elongated shape for extra comfort. Two-piece toilet. Elongated bowl offers added room and comfort. 1.28 gallons per flush (gpf). 2-1/8-inch glazed trapway. Right-hand trip lever included. Insuliner® tank liner minimizes condensation on the tank when exposed to high humidity. Combination consists of K-4467-UR tank and the K-4198 bowl. Coordinates with other products in the Wellworth collection. Standard 12-inch rough-in.