17024 Random Cut Stone, 9"H. Course - Heavy texture, random cut stone, 2.5" deep GrayLastic™Elastomeric Urethane - Up to 100 uses.Mold-bonded to 0.75" plywood. Add 1.125" to liner thickness. Max Depth: 2.500"Stone Size: 12"-54" W x 9" H Part Size: 96" W x 45" H Click here for cut-sheet