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 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 5999-01-056-9035
NSN 5835-00-888-9422
NSN 5935-01-031-7857
NSN 5996-01-088-7074
NSN 6610-00-395-2574
NSN 6620-00-613-3023
NSN 6220-01-399-4910
NSN 6130-01-138-2470
NSN 5905-00-642-8130
NSN 6150-01-248-8968
NSN 6645-01-324-5621
NSN 5905-00-638-6776