Normal duty anti slip mesh gratings look like a honeycomb with 20 x 20 mm holes. Trollies with 80 mm diameter wheels can easily be transported across this grate. Mesh grates consist of 25 mm wide and 1.2 mm thick steel strips that interlock like frames. Mesh gratings are welded on both sides and at all intersections. Because it is fully welded, it remains like new for years without bending or curling, if used under appropriate conditions.