Enjoy hot water on your boat with a dependable West Marine Water Heater.Heat water dockside with 120V AC power or when underway, using engine heat. This water heater features an ignition-protected design, cladded aluminum tank, dual-wall heat exchanger and aluminum case. Heat exchanger ports are located at the "Front", on the same side as the electrical box and cold in/hot out ports. To protect against galvanic corrosion and extend tank life, use of a magnesium anode is highly recommended.Key FeaturesAluminum caseAluminum tankFront-located heat exchanger ports11-gallon capacity