American Standard's new H2Option toilet features a powerful siphonic dual-flush system designed to keep the bowl clean and fresh. On the low setting, it uses as little as 1.0 gallon of water to scour the sides of the bowl to remove paper and waste. The siphonic action diverts some of the water to the rim and into a series of chambers that pushes the water out into the bowl to clear debris. The H2Option is available in white, bone and linen.