Should be of 2mm diameter steel wire or 4 mm Knauf Hanger wire with Knauf Double connector for hangerwire Steel wire can be connected to the main runner by twisting the wire through the premade holes in themain runner and wrapping it a minimum of 4 times. Hanger wires are to be spaced a maximum 1200mmon centers and fixed to the main structure or soft with appropriate fixing dowel. PRODUCT QUANTITIES REQUIRED FOR M2 CONSTRUCTION Hanger 0.70 pcs Physical Data Material - Hot dipped galvanized steel Surface Finish - Baked polyester paint Cross Tee / Main Tee Interface - Stepped ends Profile - Exposed tee system System Characteristics Exposed 15 mm system Fast and simple to install Maximum economy and design simplicity Cross-tees with override-ends resist twisting and give professionally finished look with no exposed steel edges Compatible with most lay-in ceiling tiles.