Install instructions were not great.  One of the key first step is to make sure the side frames line up with each other (measure from the edge of the shower) because if they don't, the sliding glass will be hitting the metal frame on the other side (instead of staying in the groove) when the door is slid open all the way.  The rollers where the glass hangs down seems very basic (like those old cabinet doors), so not sure how effective they will be over time and not come crashing down on someone who opens the door a bit rough; will have to see how it holds up over time.