It's just not made well.   The glass in two of them was not kept in place with the little metal clamps but easily fixed and the one with the glass broken was replaced very easily.    I had to bend the frame on one of them so that the two frames were centered evenly.   In each of them the light receptacle needed to be bent so the bulb would be centered and straight up.  I like the look and again returns are easy.  Just not really good quality control.