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 6650-01-565-6340
NSN 5990-01-153-0679
NSN 5895-01-534-6419
NSN 6320-00-194-4252
NSN 5996-01-593-7789
NSN 6610-01-365-7796
NSN 5895-01-407-7006
NSN 5935-00-986-3556
NSN 5905-01-541-9219
NSN 5925-01-472-4731
NSN 6240-00-467-7295
NSN 5999-01-123-8754