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 5999-01-333-0408
NSN 6620-01-468-9288
NSN 5950-01-459-9796
NSN 4140-00-908-2763
NSN 5975-01-197-1923
NSN 6220-01-123-5139
NSN 5998-01-420-2742
NSN 5835-01-510-1873
NSN 5945-01-538-5230
NSN 6105-01-204-7176
NSN 6610-00-015-4382
NSN 5925-01-326-2666