Return Air Grilles Overall Depth 2 1/8 in Overall Height 23 3/4 in Overall Width 23 3/4 in Maximum Opening Height 22 in Maximum Opening Width 22 in Grille Color White Grille Material Plastic Material Plastic Bar Spacing 1/2 in Face Design Egg Crate Airflow Directions Four-Way Mounting Style Lay-In Blade Angle 90 Degrees Finish Matte Product Type Return Air Grille Airflow Capacity 1 000 cfm