Tube has 60 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 6220-01-180-7386
NSN 5998-00-840-6834
NSN 5905-01-351-9796
NSN 5950-01-381-0490
NSN 6130-00-862-2648
NSN 6620-00-946-4864
NSN 5920-00-231-3922
NSN 5915-01-300-7643
NSN 5925-01-096-4703
NSN 5965-00-934-3495
NSN 2925-01-043-9786
NSN 6240-00-617-1719