Focusing on speed of installation, the Chief RPMAU universal video projector mount is packed with easy-to-use features that save time and maximize projector security. The versatile Chief RPMAU can be mounted into mounted to a 1-1/2" NPT threaded extension column, 2" x 4" wood stud cross bracing, mounted to a concrete ceiling or suspended from four #10-24 grade ASTM A307 or better threaded rods (not included). Features: Microzone Adjustments make projector registration fast and precise (including...