20" x 22" or 22" x 20" Cube Core Eggcrate Return Air Grille return filter positioning supply and return grills

positioning supply and return grills accordingly

75"H – fits a 16" X 6" duct opening

each available in a variety of high-quality materials like brushed nickel

875" height

Actual Filter Size – 13 3/4"w x 31 3/4" x 1"

20" x 22" or 22" x 20" Cube Core Eggcrate Return Air Grille return filter positioning supply and return grills+ Product Details Size 20" x 22" or 22" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" X 23. 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