20" x 22" or 22" x 20" Cube Core Eggcrate Return Air Grille 14" Diameter + Product Details Size -

+ Product Details Size - 10"w X 30"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 12"h X 2"d (for duct opening measurement only)

High Quality – High-quality steel with counter-sunk screw holes (screws included) and no sharp edges

Universal size

75" Width X 37

20" x 22" or 22" x 20" Cube Core Eggcrate Return Air Grille 14" Diameter + Product Details Size -+ 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