I read all the review on this product and get it anyway . it arrive right on time . take all the piece out of the box . all be in a neat package with all size in its own case . the instruction be ok but not the best . it do not take long to figure it out . spread out all the package of screw need and figure out what size we need . we size up all we angle and hole . look at the picture and move all the move part around to make the best fit and also enable we to screw all the part together without any interference . once we get the projector and bottom part together it be a simple matter of get to find out where the stud be in the ceiling , screw in the two screw to hold the top piece up and fitting the two piece together . take we about a hour total . we have the thing up and sit down to watch tv in a very short time . Fabulous . great piece of equipment . thanks .