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 5925-01-608-5897
NSN 5975-00-279-1776
NSN 5920-01-350-4426
NSN 5975-00-513-8966
NSN 5965-00-543-1837
NSN 6685-01-123-9275
NSN 6240-01-149-8590
NSN 6150-01-050-9362
NSN 5998-00-515-2252
NSN 5855-00-688-9954
NSN 5930-01-400-6126
NSN 5920-01-047-4682