When I had an SUV with a door that had a frame all the way around the window, I LOVED these window pet vents. They were beyond awesome and saved the day many times. However, I had to sell the SUV and now have a Subaru Outback wagon. The doors do NOT have the frame over the top and down the sides of the door windows. They are like a convertibles door. *Sigh* I miss those vents so much and now I can't take the dogs as often. WOULD SOMEONE PLEASE design a vent that works on a non-framed auto window?