2 inch thick anti-uv HDPE board for Seawater desalination May 16, 2022 · Custom Plastic HDPE White Cutting Board 1/4 2 inch thick matte sheet of hdpe for Seawater desalination 2.1, ASTM D4976, PE244, ASTMD1248 Type IV, Class A, Fed Spec LP512, Type 1, Class H, Grade 5 HDPE Sheets Technical Data Sheet.