Tube has 36 fins per ft., conforms to mil-h-16235c
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 6620-01-239-7556
NSN 5965-01-241-0553
NSN 5895-00-925-2423
NSN 6105-01-090-7491
NSN 5950-01-577-0001
NSN 6610-01-503-2951
NSN 6320-01-342-7548
NSN 6135-01-548-1423
NSN 5905-01-650-3714
NSN 5985-01-342-8461
NSN 5925-01-650-7666
NSN 4140-00-170-5152