30" x 32" or 32" x 30" Cube Core Eggcrate Return Air Grille Compatible with Duct 8" + Product Details Size –

+ Product Details Size – 34"w X 8"h is the size for the duct opening measurement only

+ Product Details Size - 32"w X 14"h is the size for the duct opening measurement only

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+ Product Details Size - 20"w X 36"h is the size for the duct opening measurement only

30" x 32" or 32" x 30" Cube Core Eggcrate Return Air Grille Compatible with Duct 8" + Product Details Size –+ Product Details Size 30" x 32" or 32" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 75" X 33. 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