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 6620-01-464-3087
NSN 5915-01-482-8377
NSN 5965-01-113-9061
NSN 5985-01-534-5581
NSN 6105-01-158-7618
NSN 2925-01-052-0636
NSN 6240-01-217-0432
NSN 6320-00-908-6841
NSN 4140-00-066-7932
NSN 6130-00-833-3133
NSN 5895-00-702-4018
NSN 5999-01-044-3196