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 5975-01-106-3595
NSN 5905-00-618-9091
NSN 6110-00-148-6901
NSN 5925-01-448-1906
NSN 5998-00-168-1654
NSN 6145-01-087-2046
NSN 6150-01-464-8041
NSN 6130-00-531-6564
NSN 6620-01-633-5142
NSN 6150-00-291-8319
NSN 6650-01-580-1586
NSN 5998-01-150-7883