20" x 26" or 26" x 20" Cube Core Eggcrate Return Air Grille w22h22 Actual Filter Size – 21

Actual Filter Size – 21 3/4"w x 19 3/4" x 1"

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

actual front end outer dimensions are approximately 32 5/8" width X 14 5/8" height -

Filter Size - 9

+ Product Description Maximize your home’s airflow with this premium 2-way air supply grille

20" x 26" or 26" x 20" Cube Core Eggcrate Return Air Grille w22h22 Actual Filter Size – 21+ Product Details Size 20" x 26 or 26" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" X 27. 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