This series of Universal Projector Mounts offers the latest design in safety, flexibility and value for many of today's most popular LCD projectors. The unique 8-point clamping mechanism allows expensive projectors to be safely installed using a 360-degree system of support. Both projector mounts offer adjustment for height, width and depth, giving maximum versatility for a wide variety of projectors. Each mount has the ability to flush mount or by using the included telescoping ceiling mast, extend the unit from the ceiling 18" x 30". VMP-PM1 Universal Mount: Opens from 10"-24" (left to right) Opens from 4.5"-7.75" (top to bottom) Clamping mechanisms adjust from 8"-11.75" front to back UL Listed VMP-PM2 Universal Mount: Opens from 7"-14" (left to right) Opens from 3"-5.75" (top to bottom) Clamping mechanisms adjust from 6.5"-10" front to back