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 6320-01-339-5351
NSN 6320-00-557-3079
NSN 6145-00-896-1893
NSN 5905-00-597-6081
NSN 5905-00-832-9466
NSN 5999-01-211-6354
NSN 6220-01-111-2073
NSN 6135-01-166-7355
NSN 5990-01-485-0260
NSN 6105-01-356-7056
NSN 6650-01-633-9147
NSN 5930-01-481-3571