Dog Cooler

I have one of these DogCooler hatch-thingies to hold the car door slightly open when the dogs are in the car. I have one, but I wanted to be able to open multiple doors to get even better air flow. And therefore I design this and printed two more.

I designed it in two part so they are laying flat while being printed. This should give the maximum strength.

I have designed it to leave the door 100 mm open. I have uploaded the freecad file if any one wants another length.