Gabion mesh :Hexagonal Wire Netting Gabions are wire containers made of hexagonal wire netting. Wire diameter varies with the hexagonal nettings. For hexagonal wire netting with no pvc coating, the wire diameter ranges from value="2" unitname="mm">2.0mm to value="4" unitname="mm">4.0mm. For those PVC coated hexagonal wire netting, the outside diameter ranges from value="3" unitname="mm">3.0mm to value="4" unitname="mm">4.0mm. The wire of the outside frame edge is one wire gauge thicker than the wire used for hexagonal wire netting