|| Low-profile, aesthetic desig Quick projector disconnect/reconnect Steel-into-steel construction Easy installation - no assembly Independent roll, pitch and yaw adjustments make it easy to precisely register the projector Disconnect without affecting adjustments Convenient lamp and filter access All-Points Security System included at no additional cost (not available with all RPA Series Mounts) Three ceiling mounting methods Flush mount without disassembly Allows cables to be routed through the top of the mount without additional accessories Compatible with a large assortment of accessories to easily overcome a variety of installation challenges Allows lateral shift by adding the LSB-100 Lateral Shift Accessory Allows natural convection ventilation Column: 1.5" NPT Roll Adjustment: +/- 4 degrees adjustment up or down. Loosen screw, adjust mount and tighten screw to hold adjustment. Pitch Adjustment: +/- 25 degrees adjustment on each side of the mount. Loosen screw, adjust mount and tighten screw to hold adjustment. Full range of pitch in a flush mount installation. Yaw Adjustment: 360 degrees by turning the mount on the threaded column and securing in place with set screw. 12 degrees yaw possible on flush mount using slots in top of RPA.