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 6105-01-649-0377
NSN 5895-00-713-9713
NSN 5999-00-924-9112
NSN 6150-01-600-7247
NSN 5930-01-650-6853
NSN 5999-01-192-8435
NSN 6620-01-106-9100
NSN 5855-01-360-4656
NSN 5990-01-533-1347
NSN 5945-01-388-1997
NSN 6320-00-228-5678
NSN 5935-01-113-8315