1. Use a ruler to measure the size of the window where the screen is to be
2 Then use scissors to cut the appropriate size according to the measured length.
4 Tear off the adhesive on the back of the Velcro.
3 Then attach the Velcro (Hook and Loop) of the corresponding length
5. Finally, just stick it on the window and it is ready to use (Note: wipe off the dust on the edge of the window before sticking)