10" x 20" or 20" x 10" Cube Core Eggcrate Return Air Grille Color_Aluminum and versatile for any project

and versatile for any project

+ Product Details Size – 2"w X 12"h or 12"w X 2"h is the size for the duct opening measurement only

accordion-header { display: flex

+ Product Details Size - 18"w X 36"h is the size for the duct opening measurement only

10" x 20" or 20" x 10" Cube Core Eggcrate Return Air Grille Color_Aluminum and versatile for any project+ Product Details Size 10" x 20" or 20" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 21. 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