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 5985-01-411-8072
NSN 5915-01-648-2126
NSN 5905-01-141-6434
NSN 5920-01-398-1855
NSN 6620-01-051-2045
NSN 6645-01-510-3496
NSN 5960-01-317-3800
NSN 5920-01-648-2686
NSN 6150-00-288-4737
NSN 6110-01-515-6348
NSN 5935-00-484-7657
NSN 5945-01-566-0695