Tube has 36 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 5910-01-534-3156
NSN 6135-01-200-5144
NSN 5935-01-472-2470
NSN 5960-01-495-0859
NSN 6145-00-006-8438
NSN 6620-00-506-0112
NSN 5996-01-180-3107
NSN 5920-01-457-5623
NSN 6650-01-652-4361
NSN 5895-01-461-2972
NSN 5930-00-232-3806
NSN 5915-00-166-0764