Da-Lite's Horizon Electrol allows four position masking with the touch of a button from the electronic controller. To prevent distracting shadows around the image, the masking remains flush against the surface of the screen.
Features:
Patented in-the-roller motor mounting system allows for quiet operation
Equipped with a six-button wall switch, you can automatically open and close the screen, halt operation and position the screen into any of the four aspect ratios