The ehm4-220 is equipped with a high quality 220 volt 1500 watt zinc alloy heating element designed to withstand accidental operation in an empty tank. The tank is constructed of high strength aluminum core with a bonded corrosion fighting cladding material on the interior surface to assure a long life and the cubic shape. The 4 Gallon Tank Color: White 21 Lbs Part# 94106 Dimensions: 13"x16"x13" Recovery rate: 7.2 gallons per hour.