Top-rated And Dependable 15mm hdpe board Plastic Sheet Hdpe Board 4’x8′ plastic Texture 15mm Thick Waterproof 4×8 Extruded Plastic 1220x2440mm High Density Polyethylene Sheet $2.00-$2.20 / Kilogram 1 Kilogram (Min. Order) textured hdpe plastic sheets 15mm for sale-HDPE high density Polyethylene Sheet HDPE 10mm-12mm-15mm-20mm-25mm-30mm thick High Density Polyethylene Sheet: 10mm to 30mm thick.