21k batterie à serpentins à ailettes De Dietrich 7849329

The 21k finned coil battery is a heat exchanger component designed for use in heating appliances such as boilers and burners. Its finned structure maximizes surface area for efficient heat transfer, making it suitable for medium-capacity systems. This replacement part helps restore thermal performance when the original coil becomes corroded or blocked. Ideal for maintenance and repair, it ensures reliable operation and consistent heating output.