Concrete gravel boards anthracite for concrete piles of wood concrete fences. Our concrete gravel boards are used in combination with concrete posts to install a solid, robust fence that is storm-resistant.+ Dimensions: 184x22cm+ Anthracite+ Reinforced concrete gravel board+ The concrete gravel boards fit exactly in the recess at the bottom of the concrete posts.+ Also mounting material available with which the wooden garden screens can be mounted quickly and easily on the concrete posts+ All types of garden screens of 180x180cm can be placed between the concrete posts and concrete slabs, in pine, hardwood, Douglas fir or composite.