I purchased two of these window bars for the rear side windows of my Renault Megane Grand Tour Bj.2002. These are accordion-usable for any other car, and relatively easy to fit. My Jack Russel bitch Lucie fit so that one again and again on vacation on the car on. The climate in the car is quite enjoyable, but you should park in the sun for the sake of the dog the car in spite of these aids NIE.
The problem arises for VW Caddy owners of newer Generation.In the small rear vent the part fit not pure.