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 6220-01-381-1793
NSN 5998-00-986-1708
NSN 5910-01-411-6189
NSN 6240-00-248-6517
NSN 6150-01-233-1746
NSN 2925-01-247-8058
NSN 6620-00-003-9771
NSN 5855-01-338-1718
NSN 6645-01-602-3813
NSN 5930-00-444-4296
NSN 6645-01-224-4265
NSN 6105-01-044-4993