For frameless shower doors, there are basically two ways of connecting the glass door to the wall or frame: Pivot and side-mount hinge. Pivot hinge fixes to the bottom and top of your shower door like a revolving door. Side-Mount hinge fixes to the side of your shower door like a normal home door. Side-Mount hinge has become more popular because it is easy to clean the shower door and there is not much of mold or mildew accumulation between the shower door and frame. If you are looking for the best glass door hinge, Sugatsune's ZL series is the one you might consider because its material and coating technology far surpass what is being available at big-box retailers.