Acer H6517ST 3D DLP Home Theater Projector Native 1080P widescreen resolution delivers a true cinematic experience for the latest high-def content. Short throw projection allows projector to display large images while it is positioned at a short distance from screen. This especially benefits home with limited space, offering greater flexibility and viewing comfort The cutting-edge Dust Shield Solution technology is a cost-effective system to protect projectors from damage caused by airborne dust and sand.