The Canon Ceiling mount RS CL12 is a sturdy mount which lets you mount a projector on a secured either wood ceiling beams or concrete with commercially available bolts. It has an adjustable base with rotation of plus or minus 10 degrees. It can also be rolled up to 20 degrees. The mount also features anti fall wires that prevent accidents when unhitching the projector. It also has a slide mechanism for image size adjustment on short throw projectors.