Home Engine Systems Engine Care Anodes Zinc Plate Hull Anode (GA-23/ZHS-23) Galvotec Inc Zinc Plate Hull Anode (GA-23/ZHS-23) $68.89 Zinc Plate Hull Anode (GA-23/ZHS-23) quantity Add to cart Product Details Product Details GA-23/ZHS-23. Zinc Plate. (2) Cast-in Galvanized Steel Straps, Weld on. 22 lbs. Dimensions: 6″ W x 12″ L x 1-1/4″ T.