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 5990-01-645-2592
NSN 6610-00-895-9314
NSN 5920-01-343-8674
NSN 6145-01-478-7459
NSN 5905-00-322-7092
NSN 6650-01-525-0958
NSN 2925-00-508-6032
NSN 5835-01-584-8538
NSN 5915-00-787-7019
NSN 6110-01-512-2008
NSN 5975-00-171-3608
NSN 5910-01-167-3162