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 5998-01-366-7292
NSN 6135-01-458-7476
NSN 5895-01-306-7467
NSN 6220-01-503-8692
NSN 6610-01-440-9913
NSN 6110-00-575-9795
NSN 6220-01-143-5761
NSN 5960-01-210-8779
NSN 5990-00-189-6649
NSN 5925-00-722-7610
NSN 5925-01-401-5314
NSN 6650-00-408-3105