Chain link mesh fence with barbed edge are the most common type of security fence.
They are strong and require no maintenance. The open design of chain link fence eliminates blind spots and dead zones within the perimeter of the fence. Important for visual security checks. The addition of barbed wire adds another layer of security. Sharp to the touch and even more intimidating to the eye, barbed wire prevents would be intruders from climbing over a galvanized chain link fence.