26" x 30" or 30" x 26" Cube Core Eggcrate Return Air Grille fixed bar rust-free aluminum construction with smooth

rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)

+ Product Description Introducing the 3-coned supply grille for a T-bar lay-in

Width vs Height

+ Product Details Size – 20"w X 30"h is the size for the duct opening measurement only

26" x 30" or 30" x 26" Cube Core Eggcrate Return Air Grille fixed bar rust-free aluminum construction with smooth+ 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