Stainless steel security screens and mesh are a type of metal screening designed to provide both a physical and visual barrier to protect homes and commercial buildings. For ultimate strength, they are usually made from relatively thick, heavy gauge grade 304 or 316 stainless steel. The mesh size is usually fine enough to form an effective security barrier but still allow airflow and ventilation. This type of metal mesh also provides an effective barrier to protect from erosive elements such as wind, rain, and pests, and can provide a moderate level of fire–resistance. Stainless steel security screens also offer additional benefits including being maintenance–free, highly corrosion resistant, non–combustible, and highly durable, making them an ideal choice for long–term security.