20 X 20 (Duct Opening Size) Air Return Filter Grille Steel Bar Face (Color-White) Covers 20" x 20" opening. Register face is 21-3/4" x 21-3/4". Stylish grille for ceiling return air. Face opens on hinges to allow filter access. Vanes are fixed individually. Steel construction. Color-White. Built in lever style latches close firmly, no knobs to lose. Bar Style Return Filter Frame 20X20