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 5975-01-012-9211
NSN 5996-00-601-6690
NSN 5935-00-126-5937
NSN 6110-01-408-7821
NSN 5996-01-534-7687
NSN 5905-01-587-0710
NSN 5975-00-038-2813
NSN 6105-01-100-1007
NSN 5915-01-278-9176
NSN 2925-01-315-1714
NSN 5985-01-523-3100
NSN 6650-01-443-1476