Insect screens are protective barriers made from fine mesh materials designed to keep insects out of homes and buildings while allowing fresh air to flow in. They are commonly installed on windows and doors, providing a simple solution to prevent pests like mosquitoes, flies, and other bugs from entering indoor spaces. These screens come in various styles, including fixed, retractable, and magnetic options, catering to different needs and preferences. Insect screens are often made from durable materials such as fiberglass or aluminum, ensuring they withstand outdoor conditions while maintaining visibility and ventilation.