22" x 22" Cube Core Eggcrate Return Air Grille w20h20 75"H – fits a 18"

75"H – fits a 18" X 4" duct opening

+ Product Details Size - 6"w X 30"h is the size for the duct opening measurement only

+ Product Description Introducing the 8" Radial Damper – Your Solution for Controlled Airflow

ensuring that you find the perfect fit for your ventilation needs

75"H – fits a 24" X 6" duct opening

22" x 22" Cube Core Eggcrate Return Air Grille w20h20 75"H – fits a 18"+ Product Details Size 22" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 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 electric