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 5895-01-199-8618
NSN 5945-01-108-8425
NSN 5855-01-346-7682
NSN 5950-01-467-3682
NSN 5999-01-408-7913
NSN 6645-00-183-6427
NSN 5925-01-263-3846
NSN 5960-00-928-2534
NSN 6240-01-104-5693
NSN 5990-01-386-5561
NSN 6240-01-445-4232
NSN 5895-01-266-7286