26" x 30" or 30" x 26" Cube Core Eggcrate Return Air Grille Copper Coil + Product Details Size –

+ Product Details Size – 24"w X 30"h is the size for the duct opening measurement only

Think of the diameter as a straight line from one end to the other

actual front end outer dimensions are approximately 36 5/8" width X 34 5/8" height

+ Product Details Size - 10"w X 28"h is the size for the duct opening measurement only

26" x 30" or 30" x 26" Cube Core Eggcrate Return Air Grille Copper Coil + Product Details Size –+ Product Details Size 26" x 30" or 30" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 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