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 5915-01-465-0070
NSN 6645-01-344-8702
NSN 6150-01-054-3983
NSN 4140-01-187-1819
NSN 6650-01-553-2805
NSN 6620-01-007-8368
NSN 6110-01-125-9723
NSN 5925-00-077-0406
NSN 6620-01-641-4122
NSN 5910-01-417-1463
NSN 5835-00-851-6470
NSN 5925-01-227-0120