KOHLER K-3609-0 Cimarron Comfort Height Elongated 1.28 gpf Toilet with AquaPiston Technology, Less Seat, White Two-piece toilet. 1.28 gallons per flush (gpf). Elongated bowl offers added room and comfort. Comfort Height(R) feature offers chair-height seating that makes sitting down and standing up easier for most adults. Seat and supply line not included. Combination consists of the K-4309 bowl and the K-4421 tank.