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 5945-01-173-7287
NSN 6135-00-934-9550
NSN 5950-00-491-4641
NSN 6150-01-076-4724
NSN 5960-00-995-2554
NSN 6105-01-477-0851
NSN 5950-01-130-1596
NSN 5999-00-596-8745
NSN 6645-01-565-2655
NSN 5998-01-548-1486
NSN 5960-01-139-3136
NSN 5950-01-444-4588