BRAZILIAN GREY SLATE PAVING SLABS - 600x400, looking for a better deal?. Grey slate paving slabs the 600x400 format is very easy to work with whether your are a professional or DIYer. They are of course machined on the underside to create a very consistent 20mm (nominal) depth for super fast installation, these slabs have crisp sawn sides with a gently textured riven surface.
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