Available up to 27.3 ft wide, SeVision 3D GX Giant Electric Projection Screens come in all offered gain levels as well as in non-perf, cinema (standard) perf, and microperf so soundstage can be placed behind screen similar to premier movie theaters. Viewing angles range from 30–40° half-gain, depending on screen gain requested. With water-based coating that maintains optical properties over time and eliminates flaking and cracking, screens can be rolled up and down frequently without damage.