Tube has 60 fins per ft
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 6145-01-073-6641
NSN 5975-01-252-9763
NSN 5925-01-088-4468
NSN 5998-01-095-4956
NSN 6685-01-595-5731
NSN 6610-01-484-1370
NSN 6320-00-228-5678
NSN 6110-01-143-3825
NSN 5960-01-515-4791
NSN 6110-01-493-3391
NSN 6610-00-150-6498
NSN 5998-00-690-6490