The Yorkville VorMax Floor-Mount Back-Outlet Toilet from American Standard features the powerful VorMax flushing technology. The VorMax unparelleled scrubbing action circulates water around the bowl from top to bottom, leaving it twice as clean as a conventional toilet while using a water-conserving 1.28 gallons of water. The Yorkville VorMax Floor-Mount Back-Outlet Toilet has a 50% quieter flush than pressure-assist configurations and ensures the complete removal of paper seat covers. Features CleanCurve Rim and EverClean® antimicrobial surface to protect against mold, mildew, odor- and stain-causing bacteria.