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 4140-00-951-3093
NSN 5905-00-570-1460
NSN 7035-00-167-7411
NSN 7035-01-550-4429
NSN 6650-01-192-9075
NSN 4140-00-136-9214
NSN 5925-01-227-6859
NSN 5915-01-017-9290
NSN 5910-01-633-9963
NSN 5960-01-506-7039
NSN 5915-01-470-2299
NSN 6135-00-733-9665