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 5965-00-150-1144
NSN 6620-00-877-3266
NSN 2925-00-614-1758
NSN 5905-00-582-1356
NSN 5910-01-083-6388
NSN 7035-00-763-6180
NSN 5996-00-269-2655
NSN 6105-01-611-9464
NSN 7035-01-339-5480
NSN 6135-01-220-7193
NSN 6105-01-468-5605
NSN 5855-01-410-8979