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 6240-00-179-5043
NSN 6685-00-498-4969
NSN 6645-01-633-1852
NSN 6240-00-500-4404
NSN 7035-00-135-4758
NSN 5985-01-533-1081
NSN 6110-01-157-2112
NSN 5965-00-518-0958
NSN 7035-01-278-1379
NSN 5960-01-498-0572
NSN 5915-01-253-0105
NSN 5910-01-148-2353