Galvanized Anti Climb Fence has a common name ,that is 358 anti-climb fence. What is the origin of the name “358 anti-climb fence”? That is , 358 Anti-climb Fence has common specification of 76.2mmX12.7mm ( 3'' x 0.5'') aperture and a wire diameter of 4mm (Gauge 8). 358 Anti-climb Fence is also called 358 Mesh Fence, or prison fence. It is usually installed with concertina razor wire coils or barbed wire on its top. This type is especially used for prison and military bases.