6" x 32" or 32" x 6" Cube Core Eggcrate Return Air Grille w18h18 with actual outer dimensions of

with actual outer dimensions of 12

75" width X 23

+ Product Details Size - 18"w X 34"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 21 5/8" width X 33 5/8" height

6" x 32" or 32" x 6" Cube Core Eggcrate Return Air Grille w18h18 with actual outer dimensions of+ Product Details Size 6" x 32" or 32" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 8. 5" X 34. 5". 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