Dave Sr. from SWISCO responded:
September 15, 2014
The 80-110 does not come with pre-existing holes, so you you would have to drill them out where needed and use our 33-089 screw to install them. If you want, we also carry a self-drill "tex" screw. See our 33-062.
You could run some caulking between the track and header on the door. It wouldn't hurt, but I don't think it's that crucial. That 1/4" gap should not really concern you. The diagram is just showing where the top roller will ride on the inside rail. The most important thing is that the 80-110 is 5/8" wide. Check the width and height of your door, |