Compact, very good support - if they fit - if not, it's done appropriately

I was looking for a highly compact fixture for the ventilation grille - all other solutions were me structurally too high.
The Garmin-holder was thus actually perfectly - unfortunately they did not fit into the grid of my car bzw.ließ not fasten properly.

I then cut a small strip of a non-slip mat and they plugged in and tightened a U-shape between the jaws of the bracket and the blade of the ventilation grille. Keeps bombproof ...

So with a little tinkering optimal.

Long-term experience, I have no ... but will report.

Addition:
The high temperatures in the car I had to tighten the bracket, because apparently the anti-slip mat is soft and thinner. But still holds ...