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 4140-00-551-3151
NSN 6150-00-644-8745
NSN 6240-01-256-5532
NSN 5945-01-123-9665
NSN 6240-01-468-5337
NSN 6610-00-466-3104
NSN 6150-00-279-9337
NSN 5998-00-169-8585
NSN 6220-01-352-5425
NSN 5996-01-421-2416
NSN 6105-01-487-5072
NSN 5930-00-724-0318