The clear choice for presenters worldwide, the 3M Overhead Projector Model 1860 features an articulating closed singlet wide-angle lens for crisp, detailed images kept sharply focused by a rack-and-pinion mechanism. The handsomely styled 3M Overhead Projector Model 1860 packs a 2,700-lumen punch for brilliant images. Quiet please! A hush-quiet cooling fan makes this projector one of the quietest on the market. Features also include a practical lamp ejector that makes replacing lamps simple, thermal-protection circuit that prevents overheating, and lamp interrupt switch that shuts off power to lamp when replacing lamps to prevent premature lamp failure. Plus, the 3M Overhead Projector Model 1860 has a five-year warranty on all parts and labor.