Tube has 60 fins per ft
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 5950-01-512-9785
NSN 6135-01-380-4396
NSN 5985-00-581-6246
NSN 5960-00-630-6630
NSN 6105-01-200-0959
NSN 5990-01-430-9177
NSN 5935-00-148-8381
NSN 5950-00-168-9049
NSN 5925-01-633-7765
NSN 5985-01-228-3577
NSN 5920-01-348-8736
NSN 5960-01-127-5425