Tube has 60 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 5930-01-181-6730
NSN 6685-01-215-1204
NSN 5960-01-257-0225
NSN 5945-01-211-6585
NSN 5935-01-050-9171
NSN 6135-00-985-7846
NSN 6620-00-212-6921
NSN 5999-01-500-1835
NSN 6145-01-041-6562
NSN 6650-01-646-1643
NSN 5990-01-517-7848
NSN 6110-01-495-0293