Kohler 3810-7 Santa Rosa Comfort Height Elongated 1.6 GPF Toilet with AquaPiston Flush Technology and Left-Hand Trip Lever, Black Black One-piece toilets integrate the tank and bowl into a seamless, easy-to-clean design. 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 Brevia with Q2 Advantage toilet seat and lid. Supply line not included.