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 5990-00-568-4940
NSN 5999-01-442-4018
NSN 5996-01-500-9139
NSN 6105-01-602-8187
NSN 5905-00-927-2902
NSN 5920-01-232-1453
NSN 6240-00-960-8458
NSN 6105-00-005-8505
NSN 7035-00-300-3208
NSN 6620-01-334-5815
NSN 7035-01-151-0265
NSN 6645-01-152-5207