Durable Welded 358 Anti Climb High Security Wire Mesh Fence, also called 358 High security fence ,358 fence. because of it's specifications Mesh Aperture: 76.2mm x 12.7mm (3'' x 0.5''), Wire Dia.: 4mm (Gauge 8). It is highly regarded as the most difficult fence to penetrate, providing an excellent defence against climbing and cut-through. These fencing panels are popular in applications including prisons, border fences, boundary fencing military sites, secure compounds.