The white 24867 Tensioned Large Advantage Deluxe Electrol Screen from Da-Lite is designed to be concealed neatly in a ceiling when not in use, which makes it ideal for large corporate conference rooms. The screen can be installed in two stages; the screen case can be installed during construction, and the screen assembly can be attached during the finishing stage. Once the screen is installed, the screen's trim conceals the rough opening in the ceiling, eliminating the need to complete additional trim work. Sliding installation brackets allow you to attach the screen housing to the structure above the drop ceiling. Closure doors keep the screen out of sight when it isn't being used.