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 5996-00-574-9365
NSN 5996-01-318-3163
NSN 5905-00-302-4567
NSN 5915-01-646-6233
NSN 4140-01-101-9946
NSN 6105-00-167-7576
NSN 5950-00-473-0543
NSN 5965-01-433-0366
NSN 4140-01-471-4812
NSN 6685-01-160-7313
NSN 5935-00-305-5902
NSN 5895-00-954-3716