... ,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 ... " x 2"50.8mm x 50.8mm12 ... MeshOpeningWire DiameterIn inchIn metric unit(mm)1/2" x 1/2"12.7mm x 12.7mm16,17,18,19,20,213/4 ...