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 5895-00-525-3295
NSN 6240-00-734-3276
NSN 6610-01-415-1623
NSN 5998-01-103-3415
NSN 5925-00-144-0482
NSN 6130-00-291-0589
NSN 5935-01-118-4372
NSN 6645-01-422-1374
NSN 7035-01-633-9537
NSN 6645-00-079-1430
NSN 5985-00-819-4479
NSN 6320-01-116-3980