KOHLER K-3946-33 Adair Comfort Height One-Piece Elongated 1.28 GPF Toilet with Aqua Piston Flush Technology and Left-Hand Trip Lever, Mexican Sand AquaPiston canister allows water to flow into the bowl from all sides (360 degrees), increasing the power and effectiveness of the flush Flush valve's 3:2 ratio harnesses the natural force of gravity and optimizes flush performance Comfort Height feature offers chair-height seating that makes sitting down and standing up easier for most adults Grip-Tight Cachet Q3 functionality allows seat to close quietly and quickly unlatch from the toilet for easy removal and convenient cleaning WaterSense toilets meet strict EPA flushing guidelines, including using at least 20 percent less water than 1.6-gallon toilets AquaPiston canister allows water to flow into the bowl from all sides, increasing the power and effectiveness of the flush Durable canister design has 90% less exposed seal material than a 3-inch flapper, for leak-free performance