119 Gallon Superstor Hot Water Tank Loses Only 1/2 Of 1 Degree Per Hour.The SuperStor Glass-Lined Storage Tanks are manufactured with high
temperature porcelain enamel and furnished with two magnesium anode rods
ridigily supported for the metal jacket tanks or one magnesium anode
rod for plastic jacket tanks. Tanks are insulated with polyurethane foam
insulation. Metal jacketed storage tanks are constructed in accordance
to the requirement of the ASME boiler pressure vessel code.