12"w X 24"h Aluminum Adjustable Return/Supply HVAC Air Grille Material_Aluminum Works for every air conditioning

Works for every air conditioning & refrigeration application including ductless mini-split

+ Product Details Size – 4"w X 12"h is the size for the duct opening measurement only

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12"w X 24"h Aluminum Adjustable Return/Supply HVAC Air Grille Material_Aluminum Works for every air conditioning+ Product Details Size 12"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 85" width X 25. 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