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 5905-01-193-1898
NSN 5930-00-903-9890
NSN 6135-00-175-7132
NSN 5915-01-233-0790
NSN 7035-00-535-8109
NSN 5998-01-245-9187
NSN 5920-00-170-4247
NSN 5996-01-461-3464
NSN 5910-01-631-4938
NSN 5965-01-485-3501
NSN 5925-01-619-0270
NSN 4140-00-393-6279