KOHLER K-5172-RA-0 San Souci Comfort Height Compact Elongated 1.28 GPF Toilet with AquaPiston Flushing Technology and Right-Hand Trip Lever, White, 1-Piece Compact elongated bowl offers added comfort while occupying the same space as a round-front bowl Comfort Height(R) feature offers chair-height seating that makes sitting down and standing up easier for most adults Includes K-4008 Grip-Tight Reveal Q3 seat AquaPiston canister allows water to flow into the bowl from all sides (360 degrees), 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.