For my Beamer (Acer H6510BD) it it limits recommended. It keeps on the ceiling (even with my plasterboard ceiling). Optimal in the solution not because the three screw holes on each projector are unfortunately too small for the four arms on the holder. However, a hole in the center of the projector is large enough. The projector hangs with me now to the single hole in the center (depends now for about 6 months there). Not optimal suspension because the originals hanger but costs about 40 more, for not actually more functions of these holders in order. I'd probably take it back and get me reasonable screws with washers. Then you can also feel free to use all three suspensions, or all four suspensions.
