Grandview GV-CMA092 16:9 Manual Pulldown "Cyber" Projection Screen - 92" (White Casing)Last long Flatness With four layer structure including Fiberglass, Stretchness less than 1% which ensures the last long flatness Sophisticated Images Engraved with optical microgroove on the surface, with resolution more than 125 line pairs per mm, which ensures the sharpness of the projected images Color Accuracy The reflection light are evenly distributed with less than 60K difference between incident angle and reflection angle Wide Color Range With