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 6145-01-249-0668
NSN 7035-01-396-3343
NSN 6135-01-320-9207
NSN 5925-01-377-5890
NSN 6320-01-607-1491
NSN 2925-01-468-7073
NSN 5998-01-503-4181
NSN 6645-01-205-3869
NSN 5835-00-632-8621
NSN 4140-01-488-5980
NSN 5965-01-589-3968
NSN 6135-01-572-3296