14" x 30" or 30" x 14" Cube Core Eggcrate Return Air Grille sidewall represents the width

represents the width

+ Product Details Size – 3"w X 10"h is the size for the duct opening measurement only

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85" width X 11

The first number in a grille size

14" x 30" or 30" x 14" Cube Core Eggcrate Return Air Grille sidewall represents the width+ Product Details Size 14" x 30" or 30" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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