3M 1711 Overhead Projector Features & Benefits: Open singlet projection head for easy cleaning 2,500 lumens of light enhance your visuals. Specially engineered for a double lamp life of 130 hours
average 10" x 10" staging area offers plenty of room for big ideas. Ten-foot power cord and tangle-free cord storage. Easy-to-locate on/off button and focus knob design. Three-year parts and labor
warranty for peace of mind. Please see product packaging for details of warranty terms. ...
Open singlet projection head for easy cleaning 2,500 lumens of light enhance your visuals.