14" x 32" or 32" x 14" Cube Core Eggcrate Return Air Grille return grille + Product Details Size –

+ Product Details Size – 24" x 30" or 30" x 24" is the size for the duct opening measurement only

Actual Filter Size – 25 3/4"w x 5 3/4" x 1"

diagonally feed it through the square hole

scratch-resistant surface that gleams like it's just been waxed

+ Product Details Size – 10" x 36" or 36" x 10" is the size for the duct opening measurement only

14" x 32" or 32" x 14" Cube Core Eggcrate Return Air Grille return grille + Product Details Size –+ Product Details Size 14" x 32" or 32" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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