26" x 30" or 30" x 26" Cube Core Eggcrate Return Air Grille Copper Coil Actual Filter Size – 31

Actual Filter Size – 31 3/4"w x 25 3/4" x 1"

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+ Product Details Size – 24"w X 30"h is the size for the duct opening measurement only

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

26" x 30" or 30" x 26" Cube Core Eggcrate Return Air Grille Copper Coil Actual Filter Size – 31+ Product Details Size 26" x 30" or 30" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 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