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 tank lid locks and an insulated tank liner to help prevent condensation on the outside of the tank. 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. Tank locks included. Combination consists of the K-4467-RZ tank and the K-4198 bowl. Coordinates with other products in the Wellworth collection. Standard 12-inch rough-in.