32" x 34" or 34" x 32" Cube Core Eggcrate Return Air Grille 18in diameter it ensures long-lasting durability

it ensures long-lasting durability

+ Product Details Size - 30"w X 8"h is the size for the duct opening measurement only

With its reliable construction and sleek design

75"H – fits a 18" X 4" duct opening

32" x 34" or 34" x 32" Cube Core Eggcrate Return Air Grille 18in diameter it ensures long-lasting durability+ Product Details Size 32" x 34" or 34" x 32" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 33. 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