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 6685-01-622-5978
NSN 6650-01-061-9101
NSN 6320-01-067-0474
NSN 6620-00-959-6614
NSN 6145-01-184-4360
NSN 5835-00-912-5656
NSN 5835-00-289-9080
NSN 4140-01-517-3969
NSN 5835-00-463-6699
NSN 5930-01-512-6208
NSN 5925-01-498-1964
NSN 6130-01-370-5836