36" x 36" Cube Core Eggcrate Return Air Grille Width_20in 12"w X 2"h Is The

12"w X 2"h Is The Size For The Duct Opening Measurement Only

6" width X 13

One Towards The Top Of The Door

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making it adaptable to various airflow needs

36" x 36" Cube Core Eggcrate Return Air Grille Width_20in 12"w X 2"h Is The+ Product Details Size 36" x 36" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 37. 75" X 37. 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