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 6135-01-142-6456
NSN 5935-01-627-7205
NSN 5905-01-135-7252
NSN 2925-00-737-6476
NSN 5895-00-816-9763
NSN 6150-00-182-4008
NSN 6685-01-219-1014
NSN 5920-00-359-4880
NSN 6645-00-759-3962
NSN 6650-00-960-5040
NSN 6110-00-936-8416
NSN 5998-00-171-9998