Elite Screens'' Aeon CineGrey 3D® AT is a fixed frame ambient and ceiling light rejecting (ALR/CLR®) projection screen that is perforated to permit acoustic transparency for use with in-wall speakers. The thin frame design maximizes the viewing area into a smaller footprint which is more appealing in appearance and in accommodating room décor. The CineGrey 3D® AT is ISF Certified for accurate color reproduction, contrast and dynamic range to create a bright, crisp, and clear image. Screen Material Ceiling and Ambient Light Rejecting (ALR/CLR®) eliminates up to 65% washout from ambient light High Contrast material enhances color saturation and black levels for greater shadow detail Polarized for Passive 3D applications Directional Reflectivity angular reflective orientation brings image clarity into the viewer''s line of sight Acoustically Transparent perforated to allow in-wall speakers to sound through the screen ISF Certified for accurate color reproduction, color contrast, and black-white dynamic range. Flame resistant: Complies with NFPA 701 and ASTME84 standards Black backing eliminates light penetration for greater picture clarity Design and Installation Sleek EDGE FREE® design maximizes viewing area into a smaller footprint Material stretches over internal framework for a tight-tensioned flat surface Lightweight aluminum split-frame design reduces shipping cost with greater portability Spring and grommet attachments easily attach the screen material with perfect surface tension Ultra-thin black aluminum bezel protects and formats the projection surface Easy DIY design assembles and installs in minutes Sliding wall mount kit is included for adjustable alignment Quality and Reliability 2-year Parts & Labor manufacturer''s warranty 3-year warranty offered through ENR-G program (Education, Non-Profit, Religious and Government)