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 5975-01-325-0635
NSN 5996-01-137-7626
NSN 6105-01-115-6117
NSN 6610-01-548-9620
NSN 6105-01-208-7914
NSN 6610-00-296-5007
NSN 5996-00-525-1777
NSN 6650-01-345-4306
NSN 5975-00-845-2097
NSN 5910-01-431-3446
NSN 5925-01-069-7607
NSN 6220-01-245-9242