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 6650-01-270-0318
NSN 5975-01-459-7312
NSN 5999-01-601-8043
NSN 4140-00-809-3602
NSN 5950-01-535-7276
NSN 5950-00-136-6371
NSN 5835-01-055-5291
NSN 5999-01-391-9479
NSN 5960-01-641-5493
NSN 5975-01-483-2323
NSN 6135-01-565-3284
NSN 5935-01-651-4615