1/16 grey HDPE board application 1/16 in. x 4 ft. x 8 ft. Plastic Panel 63003 - The henan okay. 1/16 in. x 4 ft. x 8 ft. Plastic Panel. 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) 3.7 out of 5 stars. ...