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 5855-01-304-3064
NSN 6145-01-336-9352
NSN 5999-00-521-3408
NSN 5915-00-724-5458
NSN 6685-01-400-4192
NSN 5960-01-039-2221
NSN 5965-01-534-6396
NSN 5960-00-987-1897
NSN 5905-01-202-8289
NSN 6220-01-383-6502
NSN 6610-01-064-5792
NSN 5935-00-732-1919