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 6320-01-103-1655
NSN 5930-00-126-1770
NSN 7035-00-193-2269
NSN 5855-00-688-9954
NSN 6320-01-322-4128
NSN 5835-01-158-6878
NSN 5990-01-095-8866
NSN 5985-01-177-6976
NSN 4140-00-119-1689
NSN 6240-01-377-5503
NSN 5965-01-097-4867
NSN 5835-00-505-2516