Cofferdam steel quality equivalent to S355J2. Designed for ice class application and installation in both void space and water tanks. Cofferdam outer diameter: 416 mm (requires 420 mm shell plate hole). Anode surface of mixed metal oxide (MMO) applied on pure titanium (Ti) base. 75 to 100 A nominal current output capacity. More than 15 years lifespan based on nominal current load. Anode dimension: 370 mm diameter and 16 mm disc thickness. 4 x internal fastening bolts and 1 centred power connection. Diver changable. Water proof neoprene incapsulation. Molded backside with embossed sealing rings. Total weight: 43 kg.