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 5905-00-073-0569
NSN 6150-00-841-1486
NSN 6135-00-728-9860
NSN 7035-01-083-0282
NSN 6135-00-377-9165
NSN 6105-01-373-1932
NSN 6110-01-267-9001
NSN 6610-01-593-2428
NSN 5975-00-906-0967
NSN 5996-00-375-5057
NSN 6145-00-081-2797
NSN 6220-01-472-8985