AKRO-MILS  AW1824LINER - Clear Shelf Liner for  18-inch X 24-inch Chrome Wire Shelf - Pack of 4 Creates a solid surface on top of shelf 1mm thick clear flexible plastic mat keeps small items from falling through shelves Protect shelves below from dust accumulation Compatible with most standard wire shelving systems, easily removed for cleaning Pair with Akro-Mils upright posts and other accessories