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 5999-01-160-7145
NSN 5930-00-377-4916
NSN 6650-01-126-8552
NSN 5905-01-371-9106
NSN 5855-01-540-1898
NSN 6240-01-328-6352
NSN 5945-00-132-4059
NSN 6105-01-518-7741
NSN 2925-01-085-0691
NSN 5905-01-558-9332
NSN 6645-01-342-8199
NSN 6150-01-385-5041