Tube has 60 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 6650-01-481-3618
NSN 6650-01-382-8569
NSN 6220-01-625-6475
NSN 5975-01-605-2468
NSN 5998-01-020-6871
NSN 5945-01-062-8099
NSN 5935-00-927-6700
NSN 6130-01-117-7282
NSN 5985-00-209-9237
NSN 6240-00-635-9953
NSN 6610-00-186-8229
NSN 5835-01-185-1102