Tube has 36 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 6685-01-634-0611
NSN 6620-00-448-0667
NSN 5910-00-081-2215
NSN 5960-01-122-2686
NSN 5915-00-139-6710
NSN 5925-00-156-4044
NSN 5975-00-399-6100
NSN 6150-01-292-9351
NSN 6620-00-536-5028
NSN 6320-01-056-1164
NSN 5935-00-573-7799
NSN 5975-01-528-8151