[20 x 8 Duct Hole] Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Vent Cover: Optimize Airflow Control with Movable Blades [21.6 x 9.6" Face]. 20” X 8”
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[20 x 8 Duct Hole] Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Vent Cover: Optimize Airflow Control with Movable Blades [21.6 x 9.6" Face]. 20” X 8”