Thickness 5 to 20mm waterproofing high density plastic sheet supplier Polyethylene - High Density (HDPE), sheet, thickness 20 mm Polyethylene - High Density (HDPE), sheet, thickness 20 mm, size 150 × 150 mm; Synony: ET323360; find -GF97386159 DS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich