... proof , beautiful and durable, easy to clean, convenient installation.Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3,19X5 ... 50.8, 70, 75, 80, 100, 101.6, 102……Grating type: flat bar: plain type, plain I type, serrated type ... board Plug-and-socket steel gratingComposite steel grating Platform steel grating Ditch cover plate Ladder pedal (foot pedals) high quality steel grate