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 5925-00-387-3956
NSN 6620-00-538-8746
NSN 2925-01-279-6692
NSN 5930-01-658-5992
NSN 5950-01-223-1795
NSN 6105-01-040-1166
NSN 4140-00-890-6447
NSN 6240-01-087-4749
NSN 7035-00-020-2227
NSN 5985-01-056-5179
NSN 6240-01-556-7096
NSN 5925-00-186-8669