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 6620-01-519-2628
NSN 6220-01-211-5957
NSN 4140-01-363-4666
NSN 6320-00-586-5641
NSN 6220-00-834-2838
NSN 5835-01-515-6537
NSN 6135-01-547-6822
NSN 6320-01-286-9068
NSN 5990-01-139-5477
NSN 5905-01-235-6851
NSN 6150-00-487-4484
NSN 6105-01-137-5109