14"w X 4"h Aluminum Adjustable Return/Supply HVAC Air Grille Aluminum Bar + Product Details Size –

+ Product Details Size – 20"w X 10"h is the size for the duct opening measurement only

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+ Product Details Size - 8"w X 8"h is the size for the duct opening measurement only

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

14"w X 4"h Aluminum Adjustable Return/Supply HVAC Air Grille Aluminum Bar + Product Details Size –+ Product Details Size 14"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 85" width X 5. 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