Tube has 60 fins per ft
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 5996-01-411-6195
NSN 5855-00-237-4088
NSN 6220-01-214-3650
NSN 6620-00-111-0401
NSN 5905-00-735-0782
NSN 5915-00-584-3512
NSN 6240-01-200-7937
NSN 5895-01-015-0543
NSN 5996-01-429-8967
NSN 2925-00-513-6644
NSN 5915-01-386-6003
NSN 6685-01-184-7473