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 5998-00-694-0019
NSN 6240-01-005-8872
NSN 5925-01-444-0929
NSN 5935-01-390-2027
NSN 5975-00-803-2536
NSN 5910-01-205-5007
NSN 5985-01-303-2107
NSN 4140-00-866-9587
NSN 6645-01-595-7659
NSN 5990-01-188-7309
NSN 6130-01-482-9005
NSN 6685-01-113-5350