Frigoboat Keel Cooler fitting Thread Mount. Similar to a regular through-hull fitting, where the throat passes through the hull, and a nut is threaded onto the shaft and tightened. The keel-cooler must be mounted within 5' of the compressor.
A Frigoboat keel-cooler acts as the condenser for the system. The 134a refrigerant gas is circulated by the compressor, down through tubing inbedded in the bronze where the heat exchange takes place, removing the heat completely from the vessel. No pump! No fan! No noise!
Manufacturer Part #E50361