Brightness of 4,000 lumens provides clear images in large to middle size classroom or conference room.Native 14000 x 1050 SXGA+ resolution allows you to view 1.9 times more content on larger documents and spread sheets. SXGA resolution is ideal for projecting in command and control, engineering and CAD/CAM applications where acute resolution of small details is important.Projector Management Application (PJMan) allows users to monitor, and control multiple projectors over LAN. Features include scheduling of events, e-mail alerts for reactive and routine maintenance.Side Mounted Hybrid Filter provides users with a lower cost of owenership by offering easier and less frequent maintence. (2,000 Hours between maintenance)Closed Captioning in CC1, CC2, CC3, and CC4. Provide additional or interpretive information to viewers who need to access it.