Installation is easy with the ReadyLock 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.28 2-Pc Tlt This WaterSense-labeled high-efficiency toilet brings you annual water savings. Kohler's most complete flush ever, Revolution 360 swirl flushing technology keeps your bowl cleaner longer than a conventional flush..