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 5895-00-186-0717
NSN 6610-01-016-3566
NSN 5990-01-138-8981
NSN 6110-00-165-3848
NSN 6110-00-216-6911
NSN 5920-00-636-4713
NSN 6610-01-120-7670
NSN 5910-01-153-0304
NSN 6610-01-454-2418
NSN 5945-01-441-2478
NSN 6240-00-092-3186
NSN 5960-00-470-5079