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 5835-01-442-6482
NSN 6240-01-656-1126
NSN 6110-01-252-8516
NSN 5990-01-014-9383
NSN 6145-00-258-6977
NSN 6610-01-278-9704
NSN 5945-00-844-7602
NSN 6220-01-445-6575
NSN 6145-00-291-5388
NSN 6105-00-619-1568
NSN 6620-01-509-8597
NSN 6135-01-442-4581