12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Grille w8h8 Width vs Height:

Width vs Height:

+ Product Details Size - 20"w X 20"h is the size for the duct opening measurement only

allow you to customize airflow direction with ease

no questions asked

If you are looking to enhance your project with a top-of-the-line unit

12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Grille w8h8 Width vs Height:+ Product Details Size 12" x 30" or 30" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 31. 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