Compact and ideal for limited space area. Isotemp tank features a safety mixing valve that regulates the temperature of the water coming out of the tank so that water heated to 160+ degrees will not scald boat owners or their guests High marine quality standards such as a stainless steel inner tank, a robust polypropylene casing and a 6 bar safety valve. With heat exchanger. 750 watts element. 115 Volts. 20 litres.