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 5960-01-573-6483
NSN 5990-01-108-0436
NSN 5998-01-492-9288
NSN 5920-00-796-6794
NSN 5965-00-577-1242
NSN 6130-00-707-7732
NSN 4140-01-319-7786
NSN 5905-00-071-2442
NSN 6610-01-261-4487
NSN 6650-01-143-1116
NSN 5998-01-333-4880
NSN 5950-01-299-5519