... motorized projector screen Size: 60" - 150" Ratio: 1:1, 4:3, 16:9 (optional) Fabric: matte white, glass bead Cheap wall mount motorized projector screen ... manual , and easy operational projector screen Features:1) Manual screen2) Slim ... cover design,convenient to install.4,Smooth screen surface,hard to distortion,flame retardant midew ...