22" x 30" or 30" x 22" Cube Core Eggcrate Return Air Grille 10in diameter 75"H – fits a 18"

75"H – fits a 18" X 12" duct opening

+ Product Details Size – 24"w X 24"h is the size for the duct opening measurement only

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

The integral multi-shutter damper with a convenient handle operator ensures that you can easily adjust the air volume

75" width X 17

22" x 30" or 30" x 22" Cube Core Eggcrate Return Air Grille 10in diameter 75"H – fits a 18"+ 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