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 5990-01-168-6797
NSN 6645-01-484-9847
NSN 5925-00-911-0593
NSN 6650-01-485-8536
NSN 5985-01-295-2496
NSN 6135-01-370-9441
NSN 5935-01-045-4842
NSN 5905-01-141-6633
NSN 6150-01-583-2009
NSN 5975-01-099-9450
NSN 5945-00-520-8193
NSN 5920-00-723-4554