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 5835-01-629-2044
NSN 5960-00-484-7728
NSN 6650-00-131-0812
NSN 5910-01-539-1959
NSN 6240-01-197-8491
NSN 6650-00-256-9059
NSN 5935-00-342-9426
NSN 6220-01-022-1780
NSN 6105-00-826-1359
NSN 6240-00-966-3831
NSN 6135-01-577-5532
NSN 7035-00-529-3128