1/2 inch natural HDPE sheets direct factory - okuhmwpe.com. Product Description. Item Description: HDPE (High Density Polyethylene) Plastic Sheet 1/2" x 12" x 48" Natural lor. yellow high density plastic board 1/2 inch factory price HDPE Sheets High Density Polyethylene, Black, White, lorsFDA 21CFR177.1520 Sec. 2.1, ASTM D4976, PE244 ...