Pre-built closeboard panels are 6' wide of varying heights. They must always be installed on a level ground. When a garden slopes the ground must be cut to accommodate. When there is more that one panel on sloping groung, stepping will occur.
Generally closeboard panels should be installed on gravel boards to keep the panel from touching the ground.
Closeboard panels have framing on the rear of the panel with a smooth front side.
Panels include a small capping strip although this is not as strong as site built closeboard capping.