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 6150-00-580-0511
NSN 6135-01-303-0295
NSN 6620-00-145-8232
NSN 6645-01-476-6115
NSN 5998-00-540-0934
NSN 5935-01-461-8537
NSN 5998-01-658-8565
NSN 6320-00-857-4073
NSN 5835-01-046-5632
NSN 5996-01-364-1074
NSN 5835-01-218-5560
NSN 5855-01-428-9456