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 5945-01-505-5569
NSN 5905-01-103-6012
NSN 5905-01-061-9848
NSN 6685-01-534-7944
NSN 6620-01-189-5037
NSN 5895-00-835-4806
NSN 5855-01-254-3041
NSN 5925-00-142-9991
NSN 4140-01-052-1378
NSN 6610-01-365-1896
NSN 7035-01-364-8454
NSN 2925-01-244-3016