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 5930-01-478-5114
NSN 7035-00-465-3298
NSN 6645-00-521-0353
NSN 5935-01-260-4104
NSN 6135-00-235-1938
NSN 5925-01-646-1742
NSN 6620-01-204-5650
NSN 5998-01-187-7231
NSN 5930-01-353-3068
NSN 5985-00-455-8555
NSN 5990-01-472-2447
NSN 5930-01-465-1903