[20 x 8 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 9.6"Face] 20” X 8”
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[20 x 8 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 9.6"Face] 20” X 8”