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 6240-01-371-8340
NSN 6685-01-254-8616
NSN 5985-01-528-9371
NSN 7035-00-185-8683
NSN 5965-00-624-4134
NSN 5915-01-141-6726
NSN 5945-01-295-2091
NSN 6650-00-336-4828
NSN 5895-00-102-2603
NSN 6620-01-034-4539
NSN 2925-01-620-6812
NSN 7035-00-557-5570