The Da - Lite Model C Manual Projection Screen features a 133 - inch diagonal viewing area with a 16:9 aspect ratio, making it ideal for large lecture halls, conference rooms, and training environments. Constructed with a matte white screen fabric, it provides excellent image quality with a gain of 1.0 and a viewing angle of 50 degrees. The screen is designed for heavy use, equipped with lubricated steel ball bearings for smooth operation, and can be easily mounted on walls or ceilings. Its fire - resistant and mildew - resistant properties ensure longevity and safety in various settings. The screen is packaged with a limited one - year warranty for added peace of mind.