24" x 30" or 30" x 24" Cube Core Eggcrate Return Air Grille w6h6 + Product Details Size –

+ Product Details Size – 12" x 14" or 14" x 12" is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 30 5/8" height

+ Product Details Size – 18"w X 28"h is the size for the duct opening measurement only

making it perfect for both residential and commercial installations

24" x 30" or 30" x 24" Cube Core Eggcrate Return Air Grille w6h6 + Product Details Size –+ Product Details Size 24" x 30" or 30" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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