Project large, 115-inch WXGA images from only inches away with the bright 4,000 lumens Optoma W340UST. Its 22,000:1 contrast ratio and an ultra-short throw ratio of 0.25 make it ideal for space-constrained environments, such as small classrooms, meeting rooms, houses of worship, and boardrooms. LAN display supports up to 4 simultaneous computers while USB display mirrors Android and iOS devices. Four corner geometric correction allows flexible installations.