High Density polyethylene HDPE board 4x8 ft - UHMW PE Sheets. High Density polyethylene HDPE board 4x8 ft. Materials: Virgin UHMW PE. Standard Size: 1220*2440mm, 4*8 ft. Processing Method: Mould Pressing. Thickness: 8mm~200 mm. Wear Rate: 0.3~0.45. Density: 0.94g/cm3.