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 6320-00-036-3688
NSN 6130-00-277-7321
NSN 6685-00-108-6374
NSN 5925-01-556-1573
NSN 6610-01-321-4688
NSN 5996-01-281-3234
NSN 6135-01-633-8502
NSN 5920-00-359-9771
NSN 6685-01-246-4139
NSN 6110-00-221-1868
NSN 5990-01-202-5086
NSN 6105-01-085-6002