The coiled hinges on the side easily slip off. As I was inserting it into the light box. The round cover slipped from the hinge and fell to the ground shattering glass all over the place. Took an hour to clean up the shards. Take the glass out, just incase. Once the hinges are inserted into the light recheck if the hinge is stilll secured on the side - then reset the glass and push up. Glass was very heavy and in my opinion should be plastic especially for a shower cover.