17979 Oversized Ashlar Block - 2.5" deep GrayLastic™Elastomeric Urethane - Up to 100 uses.Mold-bonded to 0.75" plywood. Add 1.125" to liner thickness. Max Depth: 2.50"Stone Size: 77.25 W x 71.25" HGrout Width:No grout around perimeter Part Size:77.25" W x 71.25" H Part A, B and C Click here for cut-sheet