Interlocking Drainage Mat Tile, Anti-Slip Surface Yes, Drainage Hole Width 0.85 in, Anti-Slip Backing Yes, Number of Tiles 10, Washdown Safe Yes, X-Ray Detectable No, Width 18 in, Welding Safe No, Thermally Insulating No, USDA Certified No, Thickness 7/8 in, Surface Texture Raised Pattern, Surface Material PVC, Series ErgoDeck(TM), Surface Design Cleats, Number of Interlocking Sides 4, Resistance Properties Chemical-, NSF/ANSI 52 No, Non-Interlocking Edge Style Straight