18048 18" x 12" Split Face Block - Running Bond GrayLastic™Elastomeric Urethane - Up to 100 uses.Mold-bonded to 0.75" plywood. Add 1.125" to liner thickness. Max Depth: 0.875" from top of stone to bottom of groutBlock Size: 18"W. x 12"H. Part Size: 144"W. x 48"H. Click here for cut-sheet