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 5990-00-467-7431
NSN 2925-00-617-0826
NSN 6240-01-315-1984
NSN 5998-00-188-5349
NSN 6130-01-554-2521
NSN 5996-01-183-3632
NSN 5915-01-659-4683
NSN 6135-01-503-1688
NSN 5950-01-182-1702
NSN 6620-00-323-0031
NSN 5996-00-880-5340
NSN 5835-00-025-9951