Da-Lite Tensioned Advantage Deluxe Electrol is the Concealed-In-The-Ceiling Electric Tensioned Screen with closure doors designed with the installer in mind. It has the same great features as the Advantage Deluxe Electrol except screen is tensioned for an extra flat surface of optimum image quality when using video or data projection. Tab guide cable system maintains even lateral tension to hold surface flat while custom slat bar with added weight maintains vertical tension.