10" x 34" or 34" x 10" Cube Core Eggcrate Return Air Grille w8h8 + Product Details Size -

+ Product Details Size - 18"w X 24"h X 2"d (for duct opening measurement only)

+ Product Details Size - 22"w X 16"h is the size for the duct opening measurement only

and slashes energy costs

+ Product Details Size - 26"w X 20"h is the size for the duct opening measurement only

10" x 34" or 34" x 10" Cube Core Eggcrate Return Air Grille w8h8 + Product Details Size -+ Product Details Size 10" x 34" or 34" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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