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 6240-01-631-2906
NSN 5915-01-500-2147
NSN 6150-01-440-9947
NSN 5915-00-443-5854
NSN 5910-01-163-2463
NSN 5835-01-457-7951
NSN 5950-01-415-5752
NSN 5975-00-033-7805
NSN 5915-00-212-7970
NSN 5920-01-048-7462
NSN 5930-01-241-0590
NSN 6685-01-097-7628