This 2.8m wide high-quality, concrete gravel board for closeboard fencing is usually used in conjunction with concrete morticed posts.
Installation is easy. You simply fix the gravel board at each end to the fence post with a roofing bolt. You then use a square plate washer to secure the concrete gravel board to the special two pin cleat.
You can fix the timber centre stump to the gravel board with one 80mm coach screw.