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 4140-01-248-1696
NSN 5945-01-361-9775
NSN 5965-01-140-9446
NSN 5985-00-987-4481
NSN 6130-01-024-1679
NSN 5998-01-519-2521
NSN 5945-01-297-1971
NSN 6105-01-279-5107
NSN 5855-01-286-9928
NSN 5945-01-083-1007
NSN 5920-01-068-3135
NSN 6650-01-027-1181