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 5985-01-112-0010
NSN 5905-01-414-2014
NSN 6645-01-158-9967
NSN 5950-00-445-8900
NSN 6650-01-271-8239
NSN 5905-00-170-4163
NSN 5985-00-104-5981
NSN 5998-01-598-8420
NSN 6150-01-182-5851
NSN 5925-01-371-3378
NSN 5935-00-538-7659
NSN 5895-00-650-4778