... of Welded wire mesh Opening Wire diameter(BWG) In inch In metric unit(mm)1/4’’*1/4’’6.4mm ... 3/8’’10.6mm*10.6mm19,20,21,221/2’’*1/2’’12.7mm*12.7mm16,17,18,19,20, ... .1mm*19.1mm16,17,18,19,20,211’’*1/2’’25.4mm*12.7mm16,17,18,19,20,211 ... metric unit(mm)2’’*3’’50mm*75mm2.0mm,2.mm,1.65mm3’’*3’’75mm*756mm2.67mm,2.41mm,2.11mm,1.83mm ... DiameterIn inchIn metric unit(mm) 1/2’’*1/2’’12.7mm*12.7mm16,17,18,19,20,213 ...