14" x 30" or 30" x 14" Cube Core Eggcrate Return Air Grille w8h8 + Product Details Size -

+ Product Details Size - 20"w X 20"h is the size for the duct opening measurement only

+Product Details Size – 2"h x 12"w is the size for the duct opening measurement only

5" - SEE BELOW IN DESCRIPTION How To Measure A Grille

no exceptions

14" x 30" or 30" x 14" Cube Core Eggcrate Return Air Grille w8h8 + Product Details Size -+ 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