An American classic, this Wellworth high-efficiency toilet tank features innovative technology for powerful, low-consumption flushing. At an economical 1.28 gallons per flush, this tank offers up to 16,500 gallons of water savings per year compared to a 3.5-gallon toilet. The streamlined design of this tank matches a coordinated bowl for a customized ensemble. 1.28 gallons per flush (gpf). Standard left-hand trip lever included. Tank locks included. Supply line not included. Combines with the K-4199 bowl to create a complete K-3999-T Highline toilet. Coordinates with other products in the Wellworth collection.