Total pain in the a$$ to install as the center rod is barely long enough to accommodate the glass and the rubber/plastic washer to secure in place. 
I find that even when tightened the glass can move and shift. I think they could have designed this much better by having a channel where the glass goes so that it won’t move or shift. 

Also, recommend two people to put up as there isn’t a hook or hinge to assist while mounting.