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 6150-01-605-0959
NSN 5935-00-939-8123
NSN 6110-01-500-8290
NSN 2925-01-151-6969
NSN 5990-01-254-3197
NSN 6650-00-641-6139
NSN 6320-01-362-9518
NSN 6105-00-779-7313
NSN 6105-01-246-7239
NSN 6320-01-512-2031
NSN 5935-00-067-8787
NSN 6610-00-063-8489