Duff B77 Anode Backing Sheet ZD77 | 4Boats

Duff B77 backing sheet for use with ZD77 sacrificial anodes provides a protective layer to reduce hull alkalinity damage and help prolong anode service life.

• Fitment: B77 backing sheet for ZD77 anodes
• Part number: B77
• Material: durable polymer backing
• Purpose: shields hull from alkaline attack and localised corrosion
• Extends anode service life and maintains cathodic protection effectiveness
• Installation: simple retrofit with standard ZD77 anodes
• Maintenance: inspect with each anode change; replace if worn