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 5855-01-448-8159
NSN 6620-00-959-6614
NSN 5945-00-513-9716
NSN 5985-01-145-6239
NSN 5960-01-294-2397
NSN 6150-01-098-2209
NSN 5925-00-990-5853
NSN 6145-01-166-2652
NSN 5998-00-559-4653
NSN 6685-01-482-3433
NSN 2925-01-519-1707
NSN 6130-01-621-3040