26" x 32" or 32" x 26" Cube Core Eggcrate Return Air Grille Color_Red Oak Wood allowing you to choose the

allowing you to choose the best option to suit your airflow needs

+ Product Details Size – 10" x 30" or 30" x 10" is the size for the duct opening measurement only

+ Product Details Size – 10" x 18" or 18" x 10" is the size for the duct opening measurement only

Marked circles for cutout

26" x 32" or 32" x 26" Cube Core Eggcrate Return Air Grille Color_Red Oak Wood allowing you to choose the+ Product Details Size 26" x 32" or 32" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 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