Duff CMR05 Zinc Hull Anode | Seawater Sacrificial Anode | 4Boats

The CMR05 zinc hull anode provides sacrificial corrosion protection for hull plates, through-hulls and bolt-on underwater fittings in seawater environments.

• Model CMR05
• Brand: Duff
• Material: zinc — best for seawater
• Shape: disc-style hull anode
• Application: hull plates, through-hulls and bolt-on underwater fittings (not recommended for propellers or shafts unless specifically certified)
• Mounting: bolt-on disc design; check bolt size and hole spacing for correct fit
• Replace when roughly 50% depleted
• Contact us to confirm model-specific certifications

Zinc is recommended for seawater; aluminium is typically used for brackish water and magnesium for freshwater. Select anodes appropriate to your water type and replace when sufficiently corroded. Contact us for exact dimensions, weight, bolt details or fitment advice. See our Zinc Anodes collection.