4KG Zinc Bar Anode

This MG Duff, zinc bolt on hull anode, is for salt water use only and is supplied with the appropriate backing pad.

The Backing pad for ZD78B bolt on anodes are designed to stop the back of the anode from wasting away, and possibly causing the anode fixings to come loose.

It also provides a barrier to help protect GRP hulls from alkalinity that can be produced as part of the cathodic protection process.

This product is not supplied with bolts, please purchase these separately or reuse pre-existing bolts.