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. A protective lining coats the inside of the tank to prevent beaded moisture. This Wellworth tank can be paired with a coordinated bowl for a customized ensemble. 1.28 gallons per flush (gpf). Standard left-hand trip lever included. Insuliner¬Æ 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-UT Highline toilet. Coordinates with other products in the Wellworth collection.