Tube has 36 fins per ft., conforms to mil-h-16235c
A heat transferring unit utilizing a separate source of steam or hot water as the heat transfer medium. It consists of finned parallel tubes joined together by a header or headers and is designed for installation in the ducts of a forced air circulating system. It may be provided with a flanged outer casing to facilitate mounting of the unit in planned or existing duct work. Circulation of the heated air is achieved by use of a blower or fan not integral with the heating unit.
Classification: Air heaters and hot air distributors, not electrically heated, incorporating a motor-driven fan or blower, and parts thereof, of iron or steel
NSN 5960-01-435-1167
NSN 5945-00-759-0131
NSN 5855-00-902-3069
NSN 6150-01-503-0430
NSN 6645-01-392-9615
NSN 6110-01-624-6878
NSN 5945-01-024-9378
NSN 5999-01-048-5057
NSN 6220-00-768-4105
NSN 5998-00-493-1679
NSN 6240-00-353-5753
NSN 6645-00-327-4005