30" x 32" or 32" x 30" Cube Core Eggcrate Return Air Grille Filter Grille + Product Details Size -

+ Product Details Size - 14"w X 36"h is the size for the duct opening measurement only

with actual outer dimensions of 18

+ Product Details Size – 2"w X 12"h or 12"w X 2"h is the size for the duct opening measurement only

rust-free aluminum

30" x 32" or 32" x 30" Cube Core Eggcrate Return Air Grille Filter Grille + Product Details Size -+ Product Details Size 30" x 32" or 32" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 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