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 6220-01-634-0660
NSN 6620-01-468-0362
NSN 5996-01-248-9699
NSN 2925-01-199-7394
NSN 6110-00-257-1446
NSN 6135-01-408-9244
NSN 5895-01-477-3790
NSN 6650-01-275-0207
NSN 6110-01-305-8180
NSN 6645-00-344-7558
NSN 2925-00-073-9375
NSN 5910-01-587-5217