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 6220-01-370-4034
NSN 5975-01-071-2967
NSN 5950-00-832-0560
NSN 5985-00-661-2263
NSN 6685-00-944-0094
NSN 5920-01-243-0611
NSN 6105-00-913-3512
NSN 5950-01-485-3518
NSN 2925-01-532-0781
NSN 6650-00-170-5095
NSN 6110-01-633-9660
NSN 5996-00-733-5690