Easy to fit and remove. Leave your windows open enjoy fresh cooler air. Don't worry about Mosquitoes, flies, lizards, bugs etc!!.Stick the adhesive side of the self adhesive Valcrotape on the frame of your window. Once you have stuck the Valcrotape on all the sides of your window frame, you can install the net on the Valcro side of the tape. The net is hold by the Valcro. You can easily open the net by just pulling the net. Once you release the net, it automatically sticks back to the Valcro.