Trench Mesh is made specifically for use in residential footing trenches. Made from grade D500L ribbed reinforcing wire, Trench Mesh is made using a variety of longitudinal wires up to 12mm diameter. Cross wires are â?¯at 300mm centres. Sheets are made in 6m lengths, with widths varying from depending on the number of longitudinal wires. The longitudinal wires are at 100mm centres. The product code, for example L8TM3, refers to the ductility grade (L), diameter of main wires (8) and the number of main wires (3). Other sizes are available, contact us for more information.