358 High Security Fence "358" comes from its measurements 3" x 0.5" x 8 gauges which equates to approx. 76.2mm x 12.7mm x 4mm (Length x height x Diameter) in metric."anti-climb": smaller openings, no place for toe or finger to hold. 358 High Security Fence Panel size:Height x Length: 2000x2200mmWire