I get this projector mount for a home theater install . it be easy to install and work great . the reason I didnt give it a 5 be because 1 of the screw they provide I with be not thread , it look like a flat nail with a philip head and I be unable to find a screw with a similar thread size -lrb- metric . -rrb- I end up improvise by get a bolt that fit into a larger hole and use two nut to do the fine adjustment . my projector be a Optoma HD 70 .