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 5999-01-214-9533
NSN 5960-00-170-6916
NSN 5910-01-496-4996
NSN 2925-01-437-9041
NSN 6240-00-183-0570
NSN 5930-00-143-4582
NSN 6620-01-602-7524
NSN 6240-00-594-7138
NSN 6150-01-114-1382
NSN 5925-01-034-7503
NSN 6650-01-268-6630
NSN 6110-01-278-4718