An American classic, this Wellworth toilet tank combines high-performance flushing power with graceful, gently curved lines. The streamlined silhouette can be paired with a coordinated bowl for a customized toilet. 1.6 gallons per flush (gpf). Standard left-hand trip lever included. Supply line not included. Combines with the K-4199 bowl to create a complete K-3979 Highline toilet, combines with the K-4198 bowl to create a complete K-3978 Wellworth toilet, and combines with the K-4197 bowl to create a complete K-3977 Wellworth toilet. Coordinates with other products in the Wellworth collection.