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 5945-01-389-1895
NSN 6105-01-150-1462
NSN 5965-00-905-7561
NSN 6150-00-477-0442
NSN 5925-00-078-2842
NSN 5895-01-093-1007
NSN 6110-01-641-1201
NSN 5999-01-364-6825
NSN 6145-00-164-8669
NSN 4140-01-352-1787
NSN 5985-01-454-4143
NSN 5930-01-328-3948