22" x 30" or 30" x 22" Cube Core Eggcrate Return Air Grille Insulated Line this filter grille never rusts

this filter grille never rusts and withstands long-term use in any environment

+ Product Details Size – 18"w X 22"h is the size for the duct opening measurement only

+ Product Details Size – 25"w X 22"h is the size for the duct opening measurement only

Made from high-quality aluminum

75" width X 3

22" x 30" or 30" x 22" Cube Core Eggcrate Return Air Grille Insulated Line this filter grille never rusts+ 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