Insect screens, also known as window screens or fly screens, are mesh coverings installed on windows, doors, or other openings to keep insects, such as flies, mosquitoes, and bugs, from entering indoor spaces while allowing air and light to flow through. They are commonly used in residential homes, commercial buildings, and even in some hospital settings. Insect screens are typically made of materials such as fiberglass, aluminum, stainless steel, or synthetic fibers. These materials are durable, lightweight, and resistant to corrosion and damage. Insect screens require regular maintenance to ensure their effectiveness. Cleaning the screens periodically helps remove dirt, dust, and debris that may accumulate on the mesh. Damaged screens should be repaired or replaced to maintain their functionality.