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 6220-01-050-8923
NSN 5910-01-301-5790
NSN 6645-00-853-0073
NSN 5835-00-170-5238
NSN 5910-00-179-5826
NSN 5925-01-135-9391
NSN 5855-00-149-0766
NSN 4140-01-025-1555
NSN 7035-01-227-2546
NSN 5985-00-364-7835
NSN 4140-01-614-4991
NSN 6645-01-231-6636