Tube has 36 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 5895-01-398-1057
NSN 6145-01-408-9608
NSN 6650-00-769-3003
NSN 5996-01-088-2260
NSN 5945-00-343-8447
NSN 5965-01-270-6832
NSN 6610-00-428-3678
NSN 6135-00-715-4001
NSN 5990-01-507-7495
NSN 5950-00-494-8255
NSN 5996-01-055-6847
NSN 6320-01-618-7800