2 inch waterproofing high density polyethylene board export 1-16 of 575 results for “hdpe sheets” – henan okay.com Generic HDPE (High Density Polyethylene) Sheet, Opaque White, Standard Tolerance, 14 Inch Thickness, 6 Inch Width, 12 Inch Length by Technology Island (6 Inch X 12 Inch) 3.8 out of 5 stars.