With its clean, simple design and efficient performance, this Highline water-conserving toilet combines both style and function. An innovative 1.28-gallon flush setting provides significant water savings of up to 16,500 gallons per year, compared to an old 3.5-gallon toilet, without sacrificing flushing power. This model features tank locks and a unique tank liner that minimizes exterior condensation in humid environments. Two-piece toilet. Elongated bowl offers added room and comfort. Comfort Height® feature offers chair-height seating that makes sitting down and standing up easier for most adults. 1.28 gallons per flush (gpf). Right-hand Polished Chrome 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-4373 bowl. 10-inch rough-in.