The ZHS-42 is a commercial anode containing two cast in galvanized steel mounting straps with 6" centers. It measures 6" x 2.5" x 12" and weighs approximately 42 pounds. It is rated to 1 amps/year and made to current MIL A 18001K spec (aka ASTM B-418 Type 1). Please call if you want an anode with a different alloy.