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 6135-01-643-9081
NSN 5965-00-136-9623
NSN 6610-01-135-2149
NSN 5915-00-067-3357
NSN 5905-00-430-8032
NSN 5985-00-357-0798
NSN 4140-00-538-8959
NSN 5920-01-309-6766
NSN 6145-00-294-0830
NSN 5895-01-656-2712
NSN 6150-01-166-1064
NSN 6130-00-862-2648