This one-piece toilet by KOHLER(R) seamlessly integrates the tank and bowl. Everything you need in one box to create a sleek result and an easy to clean design. The compact and elongated bowl extends out further for extra room and added comfort. The product has a glazed trapway (2 1/8//), a feature that is highly valued as it allows a smoother exit path for water and waste thus reducing the chance of getting a clogged toilet. The toilet uses 1.28 gallons per flush and is WaterSense(R) certified. It uses 20 per cent less water than 1.6-gallon toilets. The toilet comes with the Grip-Tight Cachet Q3 feature that prevents the seat from slamming. The supply line not included.