this `` universal '' mount come with 4 different size screw for different model of projector ... but none of they fit mine . after 3 trip to home depot to find a long enough screw that would fit -lrb- do not happen -rrb- i have to scrap this thing and discontinue my projector project until i could get a different -lrb- properly `` universal '' -rrb- mount - which i do . i be so ridiculously frustrate with this thing and so save yourself the frustration and buy something else .