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 6620-01-607-5738
NSN 5965-00-058-6751
NSN 6220-00-211-6146
NSN 6220-01-367-1877
NSN 6110-00-317-8063
NSN 5905-00-964-4425
NSN 6145-00-155-5297
NSN 5945-01-430-4992
NSN 6110-01-160-7706
NSN 5920-01-550-1810
NSN 6135-00-164-8780
NSN 5930-00-943-4031