The Kohler Kathryn one-piece 1930s-style toilet offers a classic design with modern technology. It uses AquaPiston, a flush engine that delivers high-octane power at only 1.28 gpf. A concealed trapway sits at the back end of the toilet. The Kathryn toilet is packaged standard with a uniquely designed trip lever and Grip-Tight Glenbury Q3 toilet seat, which features Quiet-Close technology. The lid’s Quick-Release hinges allow the seat to close quietly and unlatch from the toilet for easy removal and convenient cleaning.