Open window and clean the inside of the window frame carefully.
Remove the protective cover from the hook & loop tape and press against the window frame.
Close the window and allow the hook & loop tape to remain at the rest for at least 2 hours. Press the fly screen onto the hook & loop tape and carefully cut off any excess screening with the enclosed handy-cutter.
Press the screen with a brush end to affix it firmly to the hook & loop tape.
Insects and leaves will be blocked from entering. Air circulation will remain unaffected.
The window fly screen can easily be removed for washing. Wash at 30° C (non spin!) and reaffix to the hook & loop tape.