17027RW-LP 1/2" Ashlar Linear Cut Block - Low Retaining Wall FitzLok® Styrene - Single use. Max Depth: 0.5" Block Size: 9"- 29" W. 5"- 15" H. Mortar Joints: 0.75" Horizontal 0.75" Vertical Part Size: 81.1"W. x 39.25"H. (21.23 sq. ft.) Click here for cut-sheet