The Duff ZD78 weld-on sacrificial anode provides durable cathodic protection for hulls and underwater metalwork, engineered for exposed, abrasive or vibratory conditions.

• Sacrificial weld-on anode to protect steel hulls and underwater fittings.
• Designed for long-lasting protection in abrasive, vibratory or exposed locations.
• Welded connection with steel core bars for secure attachment and longevity.
• Anode body dimensions: 305 × 76 × 32 mm (L x W x D) — 12.0 × 3.0 × 1.3 in.
• High-purity zinc alloy, suitable for seawater cathodic protection.
• Easy to weld in place; can be trimmed for a precise fit.
• Suited to steel hulls and steel underwater structures such as hull plating, keels, skegs, rudders, thruster tunnels and sea chests.