Save water with TOTO's 1G, a one gallon per flush ultra high-efficiency toilet that incorporates the Double Cyclone flushing system. For efficient cleaning, a dual-nozzle water propulsion system enables more water to be directed to the siphon for a flush that clears the bowl. In addition, 1G’s bowl and concave rim are coated with SanaGloss, a nano-technology glaze that seals the porcelain with an ionized barrier, creating a slippery, non-porous surface that repels matter and bacteria. The 1G Double Cyclone is 17-in. from base to seat, making it ADA-compliant.