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 6240-01-621-2774
NSN 6610-00-285-5366
NSN 5920-01-601-8991
NSN 6220-01-262-7302
NSN 5895-00-576-8453
NSN 6145-01-230-1866
NSN 6240-01-068-3491
NSN 6620-01-256-4307
NSN 6645-00-300-6459
NSN 5950-00-224-1457
NSN 6110-00-175-3661
NSN 5990-00-197-0159