The 500 Series of gravity flush toilets are available in sparkling white or bone colour finish and provide the comforts of home with an elongated seat, anti-splash rim and deep bowl. A great series of toilets for boats that installs directly above a holding tank. The patented, water conserving flush mechanism creates an airtight seal and uses as little as 1 US pint/0.5 litre per foot-pedal flush.