My advice is make sure the installer cuts all the tabs off! We tried leaving on the spacer tabs that are around the outside edge (we cut the ones off that hold up the rear panel) and I had to have it redone to fix the leaks.
We ended up cutting all the plastic tabs so that it was just a flat piece of glass and gluing it in. Between the 2 of us we were able to hold it in place and eyeball it flush.
My advice is make sure the installer cuts all the tabs off! We tried leaving on the spacer tabs that are around the outside edge (we cut the ones off that hold up the rear panel) and I had to have it redone to fix the leaks.
We ended up cutting all the plastic tabs so that it was just a flat piece of glass and gluing it in. Between the 2 of us we were able to hold it in place and eyeball it flush.