Ceiling Mount RS-CL11 for REALiS WUX4000/WUX4000 D Projectors. The RS-CL11 Ceiling-Mounting Hanger is a sturdy mount It can be secured to either wood ceiling beams or concrete using commercially available bolts. The adjustable base lets you pitch or rotate your projector ±10° while also rolling it up to 20°. The mount includes anti-fall wires to prevent accidents when unhitching your projector.