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 5925-00-247-5799
NSN 5975-01-644-2617
NSN 6240-01-177-1487
NSN 5910-01-045-0128
NSN 5930-01-129-2366
NSN 5960-01-252-8821
NSN 5925-01-440-2374
NSN 5998-00-911-1654
NSN 5990-01-268-6767
NSN 6130-01-467-9465
NSN 6150-00-222-5302
NSN 5920-01-146-4503