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 5915-00-437-4081
NSN 6135-01-252-0315
NSN 4140-01-422-4223
NSN 5998-01-269-6041
NSN 5895-01-302-3795
NSN 4140-00-344-8601
NSN 5950-00-099-9612
NSN 5960-01-474-4843
NSN 5910-01-352-6700
NSN 5915-01-303-7687
NSN 5895-01-474-9377
NSN 5998-00-149-1396