 | Same great features as Da-Lite's Director Electrol® except screen is tensioned for an extra flat surface for optimum image quality when using video or data projection. 180" Diagonal, Aspect Ratio: 1:1, Screen Gain: 0.8, High Contrast Da-Mat Surface, Angle of View: 90°, 108" x 144" Viewing Area Number of Reviews: 0 | Ratings:  | Best deal: $4001 $4001 - $4930 from 2 stores. |