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 5945-01-524-3305
NSN 6645-01-154-9647
NSN 6685-01-367-2476
NSN 5960-01-369-7409
NSN 7035-01-599-9942
NSN 6610-00-820-4743
NSN 5855-00-869-3635
NSN 5925-01-379-9942
NSN 6110-00-351-9014
NSN 5855-01-474-6444
NSN 5915-01-500-1826
NSN 6650-01-328-8363