8" x 20" or 20" x 8" Cube Core Eggcrate Return Air Grille Grille querySelector('

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no sharp edges

With precise measurements and easy installation

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

+ Product Description Maximize the efficiency of your ventilation system with our top-of-the-line HVAC grilles and registers

8" x 20" or 20" x 8" Cube Core Eggcrate Return Air Grille Grille querySelector('+ Product Details Size 8" x 20" or 20" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 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