“358”comes from its measurements 3"*0.5"*8 gauge which means approximately 76.2mm*12.7mm*4mm (mesh opening* wire diameter).
358 Anti Climb Security Fence is one security fence that is extremely difficult to penetrate through, because the small mesh aperture is effectively finger proof, and extremely difficult to attack with traditional hand tools. High Security 358 Anti Climb Fence is the ultimate security fencing system and it is widely used for border security protection.