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 5960-01-623-9896
NSN 5935-01-508-4753
NSN 4140-01-503-6306
NSN 6150-01-079-8642
NSN 5985-01-578-8474
NSN 6220-01-450-5362
NSN 5998-01-555-8005
NSN 5996-01-437-6227
NSN 6220-01-024-9444
NSN 5935-00-960-7418
NSN 5920-00-782-6179
NSN 6145-01-584-2334