Insect screens, also known as bug screens, fly screens, or window screens, are made of mesh material that prevents insects from entering a building. They can be made from a variety of materials, including fiberglass, aluminum, nylon, and plastic. Insect screens can be installed in windows, doors, and other openings. They can be purchased as pre-made panels or in rolls that can be cut to size. There are several types of insect screens, including hinged casement, sliding, and roll-up. Insect screens can come in a variety of colors, including white, brown, and different wood tones. Some insect screens can be painted in RAL colors.