10" x 20" or 20" x 10" Cube Core Eggcrate Return Air Grille Color_Aluminum actual front end outer dimensions

actual front end outer dimensions are approximately 17

and matte black

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and versatile for any project

10" x 20" or 20" x 10" Cube Core Eggcrate Return Air Grille Color_Aluminum actual front end outer dimensions+ Product Details Size 10" x 20" or 20" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 21. 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