The ZHS-23 is a commercial anode containing two cast-in galvanized steel mounting straps with 6" centers. It measures 6" x 1.25" x 12" and weighs approximately 23 pounds. It has a rating of 1 amps/year and is made to current MIL A 18001K spec (aka ASTM B-418 Type 1). Please call if you want an anode with a different alloy.