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 6610-00-239-2374
NSN 5910-01-467-2850
NSN 5990-01-443-2931
NSN 6220-01-216-0678
NSN 5996-01-121-8430
NSN 5960-01-357-1261
NSN 4140-01-483-6234
NSN 5895-01-457-0991
NSN 5975-00-753-9409
NSN 5915-00-682-7799
NSN 6240-01-115-0526
NSN 6650-00-901-4914