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 5945-01-541-4827
NSN 5960-01-119-4609
NSN 6610-01-070-0230
NSN 6105-01-409-2023
NSN 5930-01-141-7018
NSN 6105-00-151-7528
NSN 6110-01-033-7557
NSN 6620-01-266-1663
NSN 4140-01-268-7106
NSN 6645-00-011-9968
NSN 5990-01-304-7597
NSN 7035-01-419-4317