The shell does not come down over the side at all. The rubber seal of the Snugtop sits on top of the bed rail and the shell itself does not extend further down. The shell is kind of level with the top of the bed rail. You would either spray inside the bed up until the horizontal bit of the bed rail starts (i.e. the rubber seal of the Snugtop will sit on the paint, which is fine) or you spray the top of you bed rail as well but NOT past the point where it bends down because you will see that. Hope this is of help.
Cheers,
AussieDMAX
Cheers,
AussieDMAX
