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 6610-01-156-0810
NSN 5990-01-623-0082
NSN 5855-01-079-1259
NSN 5990-00-125-5036
NSN 5960-00-333-9897
NSN 2925-01-225-0713
NSN 5895-00-203-2379
NSN 6145-01-291-0809
NSN 5935-01-436-4147
NSN 5975-01-409-2948
NSN 5999-00-422-4223
NSN 6240-01-391-6027