Grille, Overall Depth 2 in, Overall Height 7 1/4 in, Overall Width 19 1/8 in, Maximum Opening Height 6 in, Maximum Opening Width 16 in, Filter Depth Not Applicable, Filter Height Not Applicable, Filter Width Not Applicable, Grille Color Silver, Grille Material Aluminum, Material Aluminum, Damper Material Aluminum, Bar Spacing 3/4 in, Face Design Louvered, Airflow Directions Adjustable, Adjustable Blades Yes, Mounting Location Exposed Duct, Mounting Style Direct Mount, Blade Angle Not Applicable