As the window in my office always slammed to one or the another side with a normal stopper I designed my own in Fusion 360. With positioning more left or right I can have it more or less open. Works great :)
For you I added the .step and .f3d files so you can customize it to your liking.
Change resolution and infill to your liking. Should print without any problems down to 10% or less infill. Did a test with 5% and only top layer was medium optical quality.