Tube has 60 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 5925-01-144-3137
NSN 5855-01-334-6594
NSN 6685-01-304-2122
NSN 5960-01-449-1310
NSN 6240-01-029-5988
NSN 6610-01-514-3683
NSN 6620-01-258-2570
NSN 5925-01-097-1748
NSN 7035-01-119-6271
NSN 6110-01-152-1097
NSN 5920-01-629-9639
NSN 6110-01-078-7382