20 X 6 (Duct Opening Size) Air Register 2 Way Stamped Steel with Damper (Color-White) Stamped Face 2 Way Fixed Vane 20x6 Stylish 2 way register for wall supply air. Steel construction. Vanes are fixed. Manual shutter damper opens and closes with lever. Color-White. Comes with mounting screws. Fits 20" x 6" opening. Register face is 21-3/4" x 7-3/4".