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 5925-01-469-6667
NSN 6110-01-145-6808
NSN 5996-01-234-6084
NSN 6150-00-431-0116
NSN 6240-00-994-4056
NSN 6220-00-301-2098
NSN 5920-01-424-1708
NSN 5910-01-619-5731
NSN 5990-00-015-3907
NSN 6145-01-533-7376
NSN 5855-01-311-6666
NSN 6650-01-307-6009