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 5855-00-466-2309
NSN 6150-00-145-8922
NSN 5999-01-414-7667
NSN 5855-01-535-6275
NSN 5905-01-569-1312
NSN 6610-01-651-0987
NSN 6220-01-286-6720
NSN 6685-01-558-1967
NSN 5835-00-289-9080
NSN 6220-01-070-0244
NSN 6645-01-196-8616
NSN 6320-00-483-0451