Remixed version.

I wanted another system because when there is a draft with the original stopper, the window can still move.

With the U piece the window stays in place.

Print the block and screw first, and mount it in the place you want it to be. That way you can measure the distance from the windowtablet en the window itself. Then resize to your needs.

Printed in white PETG so it does not deform in the sun.Remixed version.