Tube has 90 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 5960-01-128-0850
NSN 5855-00-014-5008
NSN 5925-01-592-2356
NSN 5965-00-973-9974
NSN 6610-01-580-0766
NSN 5998-01-487-0126
NSN 5930-01-419-5808
NSN 6135-00-182-7008
NSN 5930-01-225-5615
NSN 5990-00-428-1895
NSN 6150-01-029-8649
NSN 6620-00-613-3023