Tube has 60 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 5960-01-570-8605
NSN 5990-00-226-1152
NSN 5935-01-443-4018
NSN 6240-00-246-5060
NSN 6110-01-287-2365
NSN 5895-00-369-7108
NSN 5910-00-273-3862
NSN 6610-00-285-5366
NSN 5905-00-732-2731
NSN 6610-01-206-3921
NSN 5990-01-219-9018
NSN 4140-01-168-8796