The Duff CMR03 zinc hull anode is a disc-shaped sacrificial anode that protects hulls and underwater fittings from galvanic corrosion in salt and brackish water. It is not recommended for freshwater applications.

• High-purity zinc for effective sacrificial protection
• Disc-style (centre-mount) design ideal for hull and keel surfaces; designed for bolting — adhesive fixing may be possible depending on substrate and should follow manufacturer guidance
• Protects steel, iron and compatible alloys in salt and brackish water
• Inspect regularly and replace when significantly consumed to maintain protection
• Genuine Duff quality engineered for reliable performance in marine conditions

Confirm size and fit for your vessel before ordering. Contact us if you need help selecting the correct anode or for technical specifications such as dimensions, weight or hole spacing. Browse our Zinc Anodes collection for alternatives.