22" x 22" Cube Core Eggcrate Return Air Grille w20h20 + Product Description When it's

+ Product Description When it's time to upgrade your HVAC Vents in your house

Actual Filter Size – 31 3/4"w x 5 3/4" x 1"

+ Product Details Size - 36"w X 6"h is the size for the duct opening measurement only

75"H – fits a 18" X 4" duct opening

22" x 22" Cube Core Eggcrate Return Air Grille w20h20 + Product Description When it's+ 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