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 6110-01-519-3813
NSN 5965-01-392-0049
NSN 6645-01-127-1793
NSN 6220-00-553-8938
NSN 6610-01-576-8955
NSN 6650-00-481-2474
NSN 6685-01-380-6838
NSN 5985-01-188-1237
NSN 6130-01-187-4654
NSN 5905-00-721-3745
NSN 6620-00-185-1671
NSN 6145-01-512-1309