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 7035-00-104-7613
NSN 6105-00-111-5681
NSN 5925-00-946-9423
NSN 5990-01-093-3087
NSN 5975-01-411-6597
NSN 6130-01-541-3322
NSN 6685-01-501-3970
NSN 6105-00-891-9768
NSN 6110-01-013-6482
NSN 5998-01-607-9515
NSN 5999-00-596-8745
NSN 5855-00-221-9435