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 6620-01-199-6343
NSN 6135-01-496-5810
NSN 6150-00-172-0431
NSN 5998-00-828-4059
NSN 5910-00-267-2998
NSN 5999-01-537-6512
NSN 6240-00-905-8789
NSN 6620-00-834-7253
NSN 5999-01-195-9948
NSN 6685-01-211-9084
NSN 6150-00-596-8766
NSN 6620-01-109-2764