Cheap wall mount motorized projector screen Size: 60" - 150" Ratio: 1:1, ... :3, 16:9 (optional) Fabric: matte white, glass bead Cheap wall mount motorized projector screen manual , and easy operational projector screen ... to install10) Running smoothly and silently11) Designed for ceiling and wall mounting1,Advanced self-locking system makes the screen to be ...