Tube has 36 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 6150-01-188-0106
NSN 6650-00-003-5413
NSN 6320-01-503-7180
NSN 5965-01-178-2367
NSN 6150-00-274-5571
NSN 5990-00-586-6435
NSN 5915-01-496-6273
NSN 5855-00-149-0766
NSN 6645-00-137-7699
NSN 5999-01-615-7743
NSN 5835-01-546-2008
NSN 5915-00-944-6257