install the foot onto my Vivitek 1080fd be a puzzle . take I 4 or 5 attempt to get something that would project and swivel the correct direction . there be a lot of tweak you can make to swivel the projector over different axis once it be initially install . due to the unanticipated flexibility of the mount , I be able to get a extra 10 '' of screen space due to be able to work around my ceiling fan and overall room condition . one complaint I do have be there be only a anchor kit for concrete , but not for drywall . I guess they expect you to find a stud , but in my location I be unable to use the stud and still have the picture center . I just pick up a anchor kit from Home Depot and from there installation go smoothly .