16" x 16" Cube Core Eggcrate Return Air Grille Adjustable Return preventDefault()

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+ Product Details Size – 10" X 4" is the size for the duct opening (floor/vent hole) measurement only

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5" - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE

+ Product Details Size - 24"w X 12"h is the size for the duct opening measurement only

16" x 16" Cube Core Eggcrate Return Air Grille Adjustable Return preventDefault()+ Product Details Size 16" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 17. 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 electric