22" x 30" or 30" x 22" Cube Core Eggcrate Return Air Grille Insulated Line + Product Description Maximize your

+ Product Description Maximize your home’s airflow with this premium Air Supply Grille air supply grille

+ Product Details Size - 10"w X 28"h is the size for the duct opening measurement only

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

+ Product Details Size – 50"w X 20"h is the size for the duct opening measurement only

22" x 30" or 30" x 22" Cube Core Eggcrate Return Air Grille Insulated Line + Product Description Maximize your+ Product Details Size 22" x 30" or 30" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 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