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 5950-00-269-2698
NSN 6685-00-554-3825
NSN 5965-01-341-1480
NSN 5960-00-679-8153
NSN 5855-01-157-7186
NSN 6610-01-182-1182
NSN 6620-01-629-3210
NSN 5945-01-019-6922
NSN 5960-01-201-5804
NSN 2925-00-555-8836
NSN 6130-01-198-0539
NSN 5910-01-486-2155