The New Toto® Drake® Elongated Toilet Bowl is designed for use with a compatible Drake® toilet tank. When paired with it's compatible tank, the Drake® features Toto®'s DYNAMAX Tornado Flush® system that utilizes a 360 deg cleaning power to reach every part of the bowl. The powerful DYNAMAX Tornado Flush® system helps reduce the frequency of toilet cleanings and the need for harsh chemicals when cleaning. The enhanced design of the new Drake® inner bowl reduces water flow resistance and turbulence, resulting in a quieter flush. When paired with a certified compatible tank, the Drake® meets the standards for EPA WaterSense® and California's CEC and CALGreen requirements. The Drake® comes ready for install into a 12 in rough-in, Additional items needed for installation and use must be purchased separately: Compatible Drake® dual flush tank, wax ring, toilet mounting bolts, water supply lines and toilet seat.