Tube has 60 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 5895-00-166-7989
NSN 5996-01-633-7979
NSN 5930-01-278-9966
NSN 5950-01-558-5007
NSN 5999-00-367-3738
NSN 5945-01-193-9862
NSN 5960-01-359-6630
NSN 6240-01-577-0267
NSN 6610-00-149-1534
NSN 5855-01-210-7636
NSN 6130-01-441-2618
NSN 6130-01-056-5251