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 5835-01-099-8702
NSN 5920-01-475-7715
NSN 5925-00-592-1001
NSN 5960-00-389-2915
NSN 5945-01-046-2178
NSN 5905-01-568-8998
NSN 6135-01-486-1443
NSN 6610-00-449-2703
NSN 6105-01-574-2126
NSN 5935-00-820-9790
NSN 6105-00-111-0851
NSN 5895-01-159-7854