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 5915-00-940-7439
NSN 5945-01-193-8220
NSN 6150-01-050-3730
NSN 5960-01-100-6746
NSN 6150-01-463-7767
NSN 5925-00-420-1386
NSN 5985-00-454-2372
NSN 5990-01-050-1102
NSN 5945-00-792-9337
NSN 6320-00-588-2401
NSN 7035-00-797-2635
NSN 6650-01-447-4631