18" x 26" or 26" x 18" Cube Core Eggcrate Return Air Grille w6h6 Every part is hand inspected

Every part is hand inspected for quality before it is packaged

+ Product Details Size - 30"w X 14"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 10 5/8" width X 32 5/8" height

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18" x 26" or 26" x 18" Cube Core Eggcrate Return Air Grille w6h6 Every part is hand inspected+ Product Details Size 18" x 26" or 26" x 18" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 75" X 27. 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