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 5920-01-179-5289
NSN 5965-00-673-9843
NSN 5855-01-618-1921
NSN 5975-00-698-9853
NSN 5920-01-440-8838
NSN 6320-00-831-2227
NSN 6620-01-633-8443
NSN 6145-01-323-4753
NSN 5960-01-483-9174
NSN 5985-01-488-9533
NSN 5915-01-078-6737
NSN 5998-01-421-2360