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 6135-00-078-9931
NSN 5990-00-672-1376
NSN 5935-01-439-1937
NSN 6320-01-304-3639
NSN 6610-01-559-5073
NSN 5996-00-218-1123
NSN 6650-00-561-0740
NSN 6320-01-532-7491
NSN 5835-01-116-2369
NSN 6685-00-186-9190
NSN 2925-00-257-2872
NSN 5965-00-086-8513