http://www.mountcenter.com/Chief-RPM-U-Projector-Mount-p/chfrpmu.htm Focusing on speed of installation, the all-new Elite⢠Series of custom and universal projector mounts is a first-class upgrade to our industry-leading RPA Series. The RPM⢠Elite series is packed with new easy-to-use features that save time and maximize projector security. For any questions call us at 877-668-6887