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 6620-01-254-3609
NSN 4140-01-394-3268
NSN 5905-00-991-3356
NSN 6135-01-589-9467
NSN 5835-01-370-4292
NSN 5905-01-650-6922
NSN 5985-00-617-9043
NSN 6105-00-519-0010
NSN 5935-00-876-6814
NSN 6130-01-025-6770
NSN 5999-00-957-4959
NSN 6130-00-094-5987