solid construction . have about 6 different pivot point that can be adjust to accommodate almost any installation . one thing that I do that be probably out of the ordinary be that I actually mount the unit to a 18 inch piece of 2x6 . I have a drop ceiling so I have access to the bare joist . the 18 inch 2x6 fit perfectly between the joist . then I attach 2 small piece of wood to either joist . this allow I to lift the projector with the 18 inch piece of wood and simply rest it on the lip of each small piece of wood . this type of installation allow I to remove the projector and mount from it be rest place without have to use a single tool .