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 5905-01-584-4677
NSN 6320-00-456-0836
NSN 6220-00-647-3096
NSN 6145-00-477-4986
NSN 5996-00-542-7081
NSN 5999-01-166-5011
NSN 6320-01-358-0141
NSN 5985-01-365-7983
NSN 4140-00-489-3020
NSN 6150-00-292-6814
NSN 5905-00-113-7488
NSN 5935-01-512-8747