Elongated bowl offers added room and comfort;Comfort Height feature offers chair-height seating that makes sitting down and standing up easier for most adults;2-1/8" (54 mm) glazed trapway;Fully skirted trapway simplifies cleaning;Revolution 360 flushing technology generates a forceful swirling motion to keep the bowl clean longer;Sanitary guard where bowl and tank meet for ease of cleaning;Patented ReadyLock installation system, a simple solution for skirted toilets, saves time, hassle, and eliminates the need to drill into the floor for standard 12" (305 mm) rough-in;Combines with a K-28141 or K-28141-RA tank to create a complete K-28161 or K-28161-RA toilet