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 4140-00-652-1396
NSN 4140-01-599-4885
NSN 6135-00-491-9864
NSN 5905-01-348-1157
NSN 5905-00-951-4364
NSN 5905-01-063-1710
NSN 6220-00-361-5150
NSN 6650-00-680-9595
NSN 5945-01-530-2516
NSN 5930-01-160-7126
NSN 6105-01-005-4825
NSN 5950-01-432-0877