Dunkirk Hotline HL50SK Indirect Water Heater Storage Tank (DWH) - 50 Gal Dunkirk's HotLine series indirect fired water heater is an excellent choice for a wide variety of applications. Dunkirk uses a porcelain coated enamel to coat the sides of its tank and heating coil facilitating heat transfer while at the same time preventing corrosion. To make absolutely sure that your water heater lasts as long as possible Dunkirk has included a replaceable extra thick magnesium anode rod guaranteed to help your indirect fired water heater last as long as possible. Two inch thick foam insulation and a surface mounted thermostat ensure that any homeowner can have long lasting instant hot water. Dunkirk Hotline HL50SK Indirect Water Heater Features: Two Inch Foam Insulation Replaceable Extra-Thick Magnesium Anode Rod Corrosion Resistant Porcelain Heavy Duty Steel Jacket Dunkirk Hotline HL50SK Indirect Water Heater Additional Features: Ease of Installation Self-cleaning drain valve Surface[]