12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Grille w8h8 If you are looking to

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

1/4” - 6518 PSI

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+ Product Details Operating Temperature From -40°F To +248°F [-40°C To +120°C]

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

12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Grille w8h8 If you are looking to+ 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