12" x 34" or 34" x 12" Cube Core Eggcrate Return Air Grille w25h25 + Product Details Size –

+ Product Details Size – 14"w X 8"h is the size for the duct opening measurement only

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12" x 34" or 34" x 12" Cube Core Eggcrate Return Air Grille w25h25 + Product Details Size –+ Product Details Size 12" x 34" or 34" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 35. 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