The Corbelle toilet bowl delivers powerful, clean swirl-style flushing in a sleek skirted design. Kohler's most complete flush ever, Revolution 360 swirl flushing technology keeps your bowl cleaner longer than a conventional flush. Installation is easy with the ReadyLock(TM) system: the skirted trapway installs to the floor flange and attaches to the toilet, eliminating the need to drill holes while offering the same secure installation as non-skirted toilets. Elongated bowl offers added room and comfort. Skirted trapway simplifies cleaning. Revolution 360 swirl flushing technology generates a forceful swirling motion to keep the bowl cleaner, longer. Comfort Height¬†feature offers chair-height seating that makes sitting down and standing up easier for most adults. 2-1/8-inch fully glazed trapway. Patented ReadyLock‚Ñ¢ installation system is a simple solution for skirted toilets that saves time, hassle, and eliminates the need to drill into the floor for a standard 12-inch rough-in. CleanCoat‚Ñ¢ technology inhibits the growth of water scale and mineral stains for improved ease of cleaning. Combines with the K-4143/4143-RA tank to create a complete K-3814/3814-RA Corbelle toilet. Standard 12-inch rough-in.