20" x 24" or 24" x 20" Cube Core Eggcrate Return Air Grille Compatible With Duct 8in designed for optimal airflow and

designed for optimal airflow and efficiency

screws same color as vent cover

75" Width X 37

Optimized Comfort: By putting airflow control at your fingertips

20" x 24" or 24" x 20" Cube Core Eggcrate Return Air Grille Compatible With Duct 8in designed for optimal airflow and+ Product Details Size 20" x 24" or 24" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 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