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 5965-01-437-4855
NSN 5999-01-429-5297
NSN 4140-00-739-2033
NSN 5999-00-900-7632
NSN 6105-01-510-1828
NSN 5920-01-433-9119
NSN 6150-00-199-8764
NSN 6145-01-220-5422
NSN 6135-00-295-2614
NSN 5835-00-435-1428
NSN 5945-01-159-6619
NSN 6240-01-451-1409