Designed for ultra short throw projectors, the latest IDEA(TM) Screen features upgraded durability, surface uniformity and rigidity to ensure a superior interactive experience. The erasable surface is hotspot-free under projection. All screens are magnetic and have a streamline aesthetic thin frame. Can be used with an ultra short throw projector (0.4:1 throw or less) as an interactive screen or as a whiteboard with dry-erase markers (IDEA Marker Kit included). 24-inch tray for markers, erasers, and interactive tools, makes this a great dual use screen. Wall brackets are included for easy installation. Here is the list of item numbers for additional options: 1587716 - 46" x 81.75" 16:9, 1587728 - 50" x 89" 16:9, 1587717 - 50" x 80" 16:10, 1587718 - 53" x 84.75" 16:10.