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 5910-01-593-6347
NSN 6240-01-266-3655
NSN 5996-00-717-8111
NSN 6240-01-428-9410
NSN 5920-01-207-9362
NSN 6610-01-130-8885
NSN 5950-01-424-7267
NSN 5835-01-535-0948
NSN 5910-01-541-4922
NSN 6240-01-242-0149
NSN 5996-00-054-7287
NSN 5905-01-372-1949