I got it this week and I hired one guy for installation from wayfair. When he sets it up on the celling, the hook which hold one string was not working. It was defective hook the installed man tied loosed wire into another wire. A loose string is woven with another string to make it horizontal. Fortunately, there are four strings, so three can hold up enough, but at the end, one string loosened and the thing was crooked to one side, and I spent three hours trying to get it right.