Tube has 90 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 5998-01-415-5163
NSN 5930-01-371-2236
NSN 5960-01-649-1341
NSN 5965-00-123-1727
NSN 5905-01-078-8464
NSN 5975-01-499-1704
NSN 6220-01-035-9448
NSN 6150-01-412-7359
NSN 5998-00-161-6564
NSN 5835-01-198-2221
NSN 6135-00-196-5267
NSN 6685-00-042-5073