To ensure the insect screen fits perfectly, you should measure the dimensions from the outside. Measure the distance from one edge of the window frame/door frame to the other to obtain accurate measurements. This way, we can ensure that the insect screen is precisely tailored to fit your door or window opening.
If you have any questions, feel free to take a photo of your window and send it to us. We will promptly advise you on how to take precise measurements.