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 6105-01-642-2193
NSN 5910-01-028-0202
NSN 6220-00-961-0783
NSN 6130-00-335-6812
NSN 6320-00-371-8335
NSN 5935-00-949-1130
NSN 6240-00-250-8693
NSN 5998-01-349-0601
NSN 5990-01-316-9477
NSN 6220-01-463-9255
NSN 5998-01-088-1050
NSN 5990-01-430-3152