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 5835-01-293-6453
NSN 6645-01-633-1852
NSN 5960-00-271-1396
NSN 5996-01-510-2919
NSN 5855-00-494-9581
NSN 6150-01-615-1127
NSN 5935-01-055-2104
NSN 5855-01-151-4226
NSN 6320-00-082-5868
NSN 5935-01-371-3410
NSN 2925-01-140-8957
NSN 5930-01-037-1928