Magnetic permeability 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 36 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 6105-01-634-0322
NSN 5975-01-495-1481
NSN 6110-00-363-3974
NSN 7035-00-890-7649
NSN 5990-01-370-4785
NSN 5990-00-395-5703
NSN 5950-01-521-7950
NSN 4140-00-274-9638
NSN 5965-01-123-3770
NSN 2925-01-469-8229
NSN 6650-00-364-7866
NSN 5965-01-462-3001