Updated STL. Front bevel is at a greater angle.

Printed on a Bambu P1S

Print upright, .4 layer height, 8% gyroid infill.

Printed in PETG. best would be ABS or ASA, but I'm not set up for that. 

Post Processing:

Heat them to 70 degrees. I used my filament dryer for 15 minutes. You want it heated all the way through. Pliable to bend, but not soft enough to crush. Once heated, mold to the curve of the window. hold there till cool. then add double sided tape and apply to window corner.