Tube has 90 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 6220-01-328-2665
NSN 5910-01-024-2267
NSN 6645-01-147-5579
NSN 6610-01-658-3664
NSN 5835-01-012-3611
NSN 5920-01-260-9234
NSN 5998-01-160-6576
NSN 6145-01-467-4129
NSN 6620-01-100-3181
NSN 6130-00-155-8028
NSN 6240-01-428-9410
NSN 5945-00-237-9881