An American classic, this Wellworth high-efficiency toilet tank reduces water consumption without compromising on flushing power. A 1.28-gallon flush setting provides significant water savings of up to 16,500 gallons per year compared to a 3.5-gallon toilet, making this tank an economical addition to your house. A protective lining inside the tank prevents beaded moisture. Pair this Wellworth tank with a coordinated bowl for a customized ensemble. 1.28 gallons per flush (gpf). Right-hand trip lever included. Insuliner® tank liner minimizes condensation on the tank when exposed to high humidity. Tank locks included. Supply line not included. Combines with the K-4199 bowl to create a complete K-3999-RZ Highline toilet. Coordinates with other products in the Wellworth collection.