30" x 30" Cube Core Eggcrate Return Air Grille Color_Black High Quality – high-quality steel

High Quality – high-quality steel with counter-sunk screw holes (screws included) and no sharp edges

75"H – fits a 18" X 4" duct opening

Quality Packaging – Every part is hand inspected for quality before it is packaged

actual front end outer dimensions are approximately 12 5/8" width X 26 5/8" height

30" x 30" Cube Core Eggcrate Return Air Grille Color_Black High Quality – high-quality steel+ Product Details Size 30" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 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 electric