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 5965-00-661-0469
NSN 6645-00-701-4606
NSN 5945-01-225-5464
NSN 6145-01-487-0792
NSN 5905-01-430-2541
NSN 6685-01-152-2768
NSN 5965-00-412-4402
NSN 5835-00-924-4268
NSN 6110-00-019-7576
NSN 6610-00-526-6765
NSN 7035-01-535-1450
NSN 6150-01-012-2185