... ,19,20,211" x 1/2"25.4mm x 12.7mm16,17,18,19,20,211-1/2" x 1-1/2"38mm x 38mm14,15,16,17 ... ,18,191" x 2"25.4mm x 50.8mm14,15,162 ... MeshOpeningWire Diameter(BWG)In inchIn metric unit(mm)1/2" x 1/2"12.7mm x 12.7mm16,17,18,19,20,213/4 ... " x 3/4"19mm x 19mm16,17,18,19,20,211" x 1"25.4mm x 25.4mm15,16,17,18,19,20 welded wire mesh ...