Magnetic permability 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 6240-01-633-9357
NSN 5925-01-425-2326
NSN 5920-01-530-2113
NSN 6650-01-141-5999
NSN 7035-00-020-2227
NSN 2925-01-359-9818
NSN 6320-00-456-2092
NSN 6610-01-121-4925
NSN 5935-01-254-6193
NSN 6610-00-891-6370
NSN 6320-01-442-8604
NSN 5950-01-534-8528