... , easy to clean, convenient installation.Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3,19X5,20X3, 20X5, 25X3, 25X4, 25X4 ... steel frame lattice Glass fiber steel case board Plug-and-socket steel gratingComposite steel grating Platform steel grating Ditch cover plate Ladder pedal (foot pedals) high quality steel ...