High Security 358 Welded Wire Mesh Fence High Security fence is also called 358 fence, because of its unique mesh size and high security,it is widely used in airports, prisons and other places for security protection. 358 fence Named from its hole size and wire diameter: The "3" refer to a 3-inch long hole, or 76.2mm; The "5" refer to a 0.5 inch short hole, or 12.7mm; "8" refer to No. 8 wire diameter, that is, 4.0mm. So to sum up,the high security fence wire diameter is 4.0MM,the hole size is 12.7*76.2mm.because of the hole is very very smal,so the whole mesh panel looks dense,so it is also called high dense mesh.The small holes makes general climbing tolls or fingers and toes are difficult to climb,even in borrowing the scissors these tolls are difficult to cut it,in terms of safty protection is absolutely no problem. Panel height 1.8m, 2.1m, 2.4m, 3m…