20" x 22" or 22" x 20" Cube Core Eggcrate Return Air Grille w16h16 + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 20" duct opening (measured at the opening)

actual front end outer dimensions are approximately 32 5/8" width X 12 5/8" height -

+ Product Details Size - 30"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 16"w X 12"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 12 5/8" height -

20" x 22" or 22" x 20" Cube Core Eggcrate Return Air Grille w16h16 + Product Details Perfect Fit+ Product Details Size 20" x 22" or 22" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 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