10" x 30" or 30" x 10" Cube Core Eggcrate Return Air Grille Color_R-8.0 Pink you can watch this informative

you can watch this informative video tutorial: How to Measure Your Vent Hole Before Ordering a Grille

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+ Product Details Size - 14"w X 14"h is the size for the duct opening measurement only

10" x 30" or 30" x 10" Cube Core Eggcrate Return Air Grille Color_R-8.0 Pink you can watch this informative+ Product Details Size 10" x 30" or 30" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 31. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing