This model is used to block open window from closing. Put it in the corner of open window and the window is blocked from closing. 

There are two versions of the blocker - for left and right opened window.

Print instructions:

• wall perimeters 3-4
• infill 25%
• layer height 0.2mm
• no supports needed

According to real window profile dimensions you may need slightly change the dimensions in the slicer.

The blocking box is at 70mm height and 40mm deep. The dimension of the blocking box is 40x20x40mm.