Excellent for video projection applications. The Tensioned Horizon Electrol is the first screen available allowing four-position masking with the touch of a button. Careful engineering ensures the masking remains flush against the surface of the screen, preventing distracting shadows around the image. Patented in-the-roller motor mounting system allows for quiet operation. Equipped with a wall keypad and infrared remote control, you can automatically open and close the screen, halt operation and position the screen into any of the four aspect ratios. An optional radio frequency receiver is available that works with the supplied remote control. Screen is tensioned for an extra flat surface for 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. Unique "step-back" masking design eliminates shadows. Black case standard. White case available upon request.