10" x 22" or 22" x 10" Cube Core Eggcrate Return Air Grille w36h36 + Product Details Size –

+ Product Details Size – 25"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 12"w X 24"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 24"h is the size for the duct opening measurement only

Actual Filter Size – 11 3/4"w x 33 3/4" x 1"

actual front end outer dimensions are approximately 20 5/8" width X 38 5/8" height -

10" x 22" or 22" x 10" Cube Core Eggcrate Return Air Grille w36h36 + Product Details Size –+ Product Details Size 10" x 22" or 22" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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