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 5965-00-757-3403
NSN 5895-01-557-3408
NSN 5910-01-649-6135
NSN 5835-01-313-7054
NSN 5855-01-286-9928
NSN 6150-01-367-3093
NSN 5950-01-096-6280
NSN 4140-00-395-0027
NSN 6150-01-342-7678
NSN 6220-01-101-2324
NSN 6135-00-643-4843
NSN 5998-01-634-0604