Tube has 60 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 5905-00-964-5517
NSN 6685-01-481-5725
NSN 5905-01-532-7434
NSN 5950-01-322-0292
NSN 5965-01-357-8259
NSN 5925-00-710-6642
NSN 4140-01-148-1695
NSN 5855-01-108-2044
NSN 5905-01-490-0985
NSN 6145-00-757-2742
NSN 5960-00-418-3588
NSN 6145-00-042-3800