Install the cross tees 1200 mm 28mm x 24mm perpendicular between the main runners to form a 1200 x 600mm grid. For 600x600 mm grid, install cross tees 600 mm at 600 mm. PRODUCT QUANTITIES REQUIRED FOR M2 CONSTRUCTION Cross Tee 1200 1.67 Im Cross Tee 600 0.84 lm [button et_class="" target="_blank" style="small" url="https://geminiuae.com/wp-content/uploads/2022/11/Knauf-T-Grids.pdf" icon="" title="download data sheet"] 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 24mm 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.