Spring actuated butterfly damper controlled by external knob
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 5985-01-386-1605
NSN 5935-01-658-9470
NSN 5855-00-688-9954
NSN 5998-00-307-3292
NSN 5855-01-258-6180
NSN 4140-00-365-2531
NSN 5960-01-443-3067
NSN 5945-01-142-4477
NSN 6220-00-458-4633
NSN 5855-01-349-6135
NSN 5990-01-048-1056
NSN 5935-00-059-5880