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 5835-01-492-3143
NSN 5910-00-776-9513
NSN 5895-00-081-2219
NSN 5930-01-077-1083
NSN 5935-01-653-0686
NSN 5998-01-466-4693
NSN 6650-01-192-9075
NSN 4140-00-800-7263
NSN 6240-01-384-3887
NSN 6645-01-594-6407
NSN 5895-00-243-5531
NSN 5915-00-483-8359