What’s the best way to cut an RV window with a non-removable screen?

Answer: Line up the factory straight edge of the film with the side of the window that lies behind the screen. Next, trim the top and bottom and remove the film. Once the pattern is removed, flip over the film and line it up with the factory edge. Next, cut the bottom edge of the film in line with the stationary window. Now trim the curvature of the window, making sure to repeat this step on both the top and bottom of the window. Finally, you’re ready to install. The last step is to trim the side of the window with the handle.