88495 Features: -Tab guide cable system maintains even lateral tension to hold surface flat while custom slat bar with added weight maintains vertical tension..-Screen surface retracts completely into the case for a clean, modern appearance when screen is not in use..-For easy installation, the Tensioned Contour Electrol is available with SCB-100 and SCB-200 (RS-232 serial control board), Low Voltage Control unit, Silent Motor, Silent Motor with Low Voltage Control or Video Projector Interface built into the case..-Front projection surfaces standard with black backing for opacity.. Options: -With its stylish curved aluminum extruded case available in either black, white or graphite finish, the Tensioned Contour Electrol is a beautiful addition to any installation..