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 6650-01-610-6739
NSN 6135-01-438-0228
NSN 5895-01-556-6867
NSN 6650-01-161-1624
NSN 5855-01-273-1971
NSN 5965-00-843-9957
NSN 5950-00-221-8255
NSN 7035-00-495-2137
NSN 5990-01-234-8646
NSN 5915-01-593-5798
NSN 5950-01-494-9778
NSN 6135-01-386-5709