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 5945-00-258-9189
NSN 5965-01-513-6540
NSN 5910-00-581-5060
NSN 5905-01-054-3393
NSN 7035-01-204-7481
NSN 5925-01-276-0456
NSN 5905-00-115-5382
NSN 5985-01-480-1484
NSN 6610-00-732-2488
NSN 5945-00-408-8763
NSN 6610-00-042-8461
NSN 5998-01-453-7543