8" x 24" or 24" x 8" Cube Core Eggcrate Return Air Grille 18in diameter Energy Efficient – Air-tight inner

Energy Efficient – Air-tight inner core decreases the pressure loss and provides a more hygienic environment - high energy efficient / No fiberglass erosion into air stream

Carefully Shrink Wrapped – With cardboard backing to prevent damage in shipment

actual front end outer dimensions are approximately 25

Slots are angled to diversify the airflow in 2 way direction

8" x 24" or 24" x 8" Cube Core Eggcrate Return Air Grille 18in diameter Energy Efficient – Air-tight inner+ Product Details Size 8" x 24" or 24" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 25. 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