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 5990-01-133-0351
NSN 6620-01-195-7817
NSN 5920-00-100-2582
NSN 5915-00-518-1644
NSN 5999-00-827-0703
NSN 5945-01-243-2701
NSN 5905-01-197-9140
NSN 5975-00-456-0627
NSN 6685-01-426-8929
NSN 5855-01-575-0061
NSN 2925-01-354-1752
NSN 5920-01-605-1529