18006 Walsh Fractured Rib - 0.375" Deep, 0.625" on Center GrayLastic™Elastomeric Urethane - Up to 100 uses.Mold-bonded to 0.75" plywood. Add 1.125" to liner thickness. Max Depth: 0.375"On Center: 0.625"Peak: 0.25"Valley: 0.25" Part Size: 45"W. x 48"H. Click here for cut-sheet