designed specifically for installation in drywall walls & ceilings after the drywall has been installed. The door flange is perforated as taping bead, with pre-punched holes. The door panel is formed with flanges on four sides, to operate freely with no binding, sagging, or distortion. 1 latch. White finish. 16-4/7″w x 16-4/7″h outside flange dimensions. 14-1/8″w x 14-1/8″d x 1-7/8″h return flange dimensions.