Tube has 90 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 5999-00-393-2811
NSN 5975-00-495-0041
NSN 2925-01-185-1814
NSN 5910-01-499-8682
NSN 5855-00-285-8172
NSN 6645-01-227-2036
NSN 6620-00-104-9722
NSN 6650-01-594-3888
NSN 6145-01-500-9192
NSN 5945-00-446-6570
NSN 6610-01-526-8855
NSN 5990-00-197-0159