mushroom slate Size: 600x300xT25-30mm, 400x200xT20-25mm, 300x150xT15-20mm, 200x100xT15-20mm We quote you as per sq meter Mushroom SlateSize: 600x300xT25-30mm, 400x200xT20-25mm, 300x150xT15-20mm, 200x100xT15-20mmWe have black, green, yellow, rust colour ect.We can quote you the competitive price as per sq meter grey mushroom slate