Tube has 36 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 5855-01-418-0089
NSN 6135-00-613-1068
NSN 6650-00-488-6305
NSN 6145-00-701-8588
NSN 5935-01-409-2463
NSN 6135-01-100-3593
NSN 6110-00-156-6468
NSN 5975-00-419-7819
NSN 5910-01-340-2710
NSN 6320-01-046-5228
NSN 5835-00-130-6404
NSN 5998-00-554-4483