DESC: This concealed in-the-ceiling electric screen allows for a choice between two different aspect ratios. The Dual Masking features a vertical masking system that begins with either an HDTV format or a Letterbox format masking to NTSC format. Each screen features Da-Lite's unique “step-back” masking design to eliminate shadows. Available in Matte White, Video SpectraTM 1.5, Glass Beaded and High Power fabrics, these screens come standard with 12" extra drop above the viewing area. Custom sizes and additional drop may be ordered.