12"w X 8"h Aluminum Adjustable Return/Supply HVAC Air Grille - Full Control Horizontal Airflow Direction 2-Way Deflection The operable dampers

The operable dampers

actual front end outer dimensions are approximately 15

Size - 10"w X 10"h is the size for the duct opening measurement only

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12"w X 8"h Aluminum Adjustable Return/Supply HVAC Air Grille - Full Control Horizontal Airflow Direction 2-Way Deflection The operable dampers+ Product Details Size 12"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 85" width X 9. 85" height. High Quality Rigid aluminum construction with counter sunk screw holes (screws included) and no sharp edges. Installation Location Sidewall and ceiling. Design Unrestricted airflow for your HVAC system adjustable one way louver with full horizontal airflow directional control single