22" x 24" or 24" x 22" Cube Core Eggcrate Return Air Grille return grille + Product Details Size -

+ Product Details Size - 6"w X 12"h is the size for the duct opening measurement only

+ Product Details Size – 8" x 30" or 30" x 8" is the size for the duct opening measurement only

as the multidirectional design ensures consistent temperature control

+ Product Details Size – 10" x 18" or 18" x 10" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 11

22" x 24" or 24" x 22" Cube Core Eggcrate Return Air Grille return grille + Product Details Size -+ Product Details Size 22" x 24" or 24" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 75" X 25. 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