Feature of Stainless steel 

• You can sleep with your windows open, without the fear of an unwanted intruder entering your home
• Provides protection against home invasions and break-ins.
• Allows ventilation with a clear view
• Protects the existing window's glass unit from flying objects in tornado and high wind conditions
• Cannot be cut with a box cutter or similar knives
• Wihstands the impact of sledgehammers, hammers, crowbars, baseball bats and other typical break and enter tools
• out flies, mosquitoes and other insects
• Pet proof. Dogs, cats and other domestic animals cannot chew or claw through the mesh