The MainStream elongated toilet from American Standard was designed with your comfort in mind, and sits taller than a standard toilet at 16-1/2 inches. The WaterWarden technology is integrated to keep your toilet from overflowing in the event of a clog, with overflow holes that drain water before it reaches the top of the bowl. This visually-appealing toilet includes a color matched seat, and has great flushing performance at a low-flow rate of 1.28 gallons per flush. Here’s How it Works:The overflow protection feature prevents overspill due to a messy toilet-bowl clog by draining excess water through the overflow holes located inside of the bowl. The overflow holes are directly connected to the drain line and offer a separate passageway for water to drain in the event of a clog. FeaturesWorry-free Overflow ProtectionMeets ADA requirementsVitreous chinaIncludes color-matched, solid plastic seat, chrome toilet handle, and color-matched bolt capsMeets EPA WaterSense criteriaRound front siphon action