I assembled and installed this unit and it works great - it opens the door very quickly - even for my two car garage. I am selling it because one month after I installed it, my townhouse complex installed new garage doors and openers.
I live in Summit (07901) and the unit is still assembled. It comes with all of the parts and manuals - all you have to do is hook it up and you are ready to go.
Please let me know if you have any questions.