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 6620-00-982-5159
NSN 6145-01-540-4792
NSN 5925-01-470-4218
NSN 5999-00-453-8723
NSN 5990-00-232-3965
NSN 6145-01-257-7786
NSN 6620-00-234-8918
NSN 6645-01-648-2115
NSN 6650-01-220-3842
NSN 2925-01-257-0695
NSN 5855-00-179-8588
NSN 2925-01-359-9818