A cast iron or sheet metal plate designed to be installed in a boiler, heater, stove, or furnace flue pipe to control the draft, and/or in an air duct to control the passage of air. Excludes valve, butterfly.
NSN 5905-01-320-6769
NSN 5935-01-076-4998
NSN 5915-00-532-6880
NSN 5985-00-952-6626
NSN 6135-01-345-4866
NSN 5915-01-039-3364
NSN 5999-01-441-2320
NSN 6135-01-483-1501
NSN 5990-01-463-2279
NSN 5930-01-095-9342
NSN 5935-00-947-6833
NSN 6610-01-078-9238