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 5999-01-054-2954
NSN 2925-00-155-2100
NSN 5835-00-677-7731
NSN 6240-01-054-2289
NSN 5945-01-554-6085
NSN 7035-00-487-8761
NSN 6240-01-454-1603
NSN 6150-01-568-9879
NSN 6650-01-583-0528
NSN 5985-01-306-8326
NSN 5960-01-127-0246
NSN 5965-01-117-7681