Magnetic permability shall be less than 1.2 before fabrication and not greater than 2.0 after fabrication as measured in a 200 oersted field, tube has 60 fins per ft.
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 6240-00-357-0139
NSN 5996-00-106-4177
NSN 5920-00-477-4408
NSN 5998-01-599-9343
NSN 5915-01-463-9241
NSN 5935-00-542-3634
NSN 5915-00-118-7407
NSN 6110-01-453-0705
NSN 6105-00-316-5098
NSN 6130-01-435-6140
NSN 7035-00-205-1932
NSN 6320-00-513-8376