When The door is set up, utilize a amount to examine Should the strike-facet edge is plumb. If it’s not, make slight changes by pulling the hinge rail out of your jamb slightly at the top or base. There’s typically about half an inch of adjustment accessible among these pieces. https://www.deluxeshowerdoors.com/services/glass-shower-door-installation-in-needham-ma-deluxe-shower-doors/