This 1.83m, Recessed concrete gravel board is ideal for use with concrete slotted posts. It’s very easy to install too because no additional fixings are required – the gravel board simply slots into place, just like the fencing.Gravel boards help your fence last much longer than it would without one. They work by protecting the bottom of the panels from ground moisture, which can naturally cause the timber to rot. You also gain extra protection with a concrete gravel board as they cannot rot like the timber alternatives. This hard wearing product is ideal for all garden fences using either lap panels or closeboard panels with concrete slotted posts.