As soon as the door is set up, use a degree to examine if the strike-facet edge is plumb. If it’s not, make slight changes by pulling the hinge rail out in the jamb somewhat at the very best or base. There’s normally about 50 percent an inch of adjustment https://www.deluxeshowerdoors.com/services/glass-shower-door-installation-in-needham-ma-deluxe-shower-doors/