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 6240-01-088-7629
NSN 5965-00-760-5404
NSN 5905-01-599-1720
NSN 6240-00-260-0399
NSN 6685-00-561-9374
NSN 2925-01-469-8229
NSN 5925-01-566-0909
NSN 5835-01-515-6537
NSN 6320-00-908-6841
NSN 5999-01-033-0331
NSN 5920-00-466-3950
NSN 5996-01-350-3345