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 6610-01-200-6861
NSN 6110-00-089-7348
NSN 4140-00-203-4844
NSN 5985-01-568-9529
NSN 5915-01-391-7149
NSN 6645-00-539-1705
NSN 5990-00-125-5036
NSN 6130-01-466-8947
NSN 5835-00-484-1529
NSN 5935-01-484-8816
NSN 5905-00-023-7357
NSN 5855-01-079-8716