26" x 34" or 34" x 26" Cube Core Eggcrate Return Air Grille w18h18 + Product Details Size -

+ Product Details Size - 24"w X 10"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 22 5/8" height -

75"H – fits a 24" X 6" duct opening

26" x 34" or 34" x 26" Cube Core Eggcrate Return Air Grille w18h18 + Product Details Size -+ Product Details Size 26" x 34" or 34" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 75" X 35. 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