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 5925-01-233-1158
NSN 6610-01-429-2162
NSN 6240-01-531-4619
NSN 5930-01-478-1649
NSN 5985-00-630-8977
NSN 5930-00-091-1677
NSN 5996-01-300-2746
NSN 5930-01-311-9165
NSN 5998-00-247-2036
NSN 6150-01-421-2543
NSN 5990-00-105-7831
NSN 6620-00-984-7252