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 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 6145-00-224-0419
NSN 5945-00-355-9505
NSN 5925-01-113-2292
NSN 5925-01-334-8402
NSN 5905-01-391-9473
NSN 5855-01-027-8414
NSN 5985-01-422-2551
NSN 6150-00-835-2397
NSN 5990-01-574-2522
NSN 5985-01-647-2463
NSN 5835-01-242-9806
NSN 2925-01-375-9487