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 4140-00-018-2198
NSN 5975-01-154-6893
NSN 5945-00-151-4623
NSN 5935-00-043-1343
NSN 6145-01-472-3120
NSN 5910-01-284-1785
NSN 6220-01-152-2637
NSN 6320-01-399-6177
NSN 6610-01-307-6363
NSN 5990-01-309-3740
NSN 5990-01-392-8842
NSN 6620-01-229-0896