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 5998-01-506-8732
NSN 5999-00-471-3513
NSN 4140-01-560-5940
NSN 6685-00-527-9489
NSN 5996-01-513-3919
NSN 6220-01-641-7684
NSN 6220-01-401-5337
NSN 6135-00-643-4843
NSN 6105-00-737-0829
NSN 5985-01-303-3777
NSN 6610-01-633-8931
NSN 6685-00-283-6107