What you should do is take a pair of tin snips and cut the visor in the middle to make it easier to take out of the window frame.
In channel window visor problems.
Quick discussion on installation of in channel versus exterior auto vent shade window visors.
I ve only had in channel visors on my vehicles as i think the outside mounted ones look pretty awful just my opinion but i ve never had any problems with the power windows not operating properly.
That means there s no risk of scratching the glass or interfering with window operation.
In both cases no drilling is.
No window contact also because of their out of window design tape on deflectors don t make any contact with the glass or window mechanics.
In channel vent visors are designed to perfectly fit onto your car windows channels while tape on vent visors require adhesive to fix them on the window frame.
The heat will allow the visors to flex into place.
Leave the visor in place and do not roll the window down for a few hot days to allow the window with the visor mold into place.
In channel vent visors do not have this benefit.
Pull out the pieces and don t worry if the rubber gasket comes out with it because you can clean off the adhesive and pop the gasket back in the channel.