FDA 21CFR177.1520 Sec. 2.1, ASTM D4976, PE244, ASTMD1248 Type IV, Class A, Fed Spec LP512, Type 1, Class H, Grade 5. lored HDPE sheets have Matte textured surfaces on both sides. .015" to .055" have soft matte textures. .075" - .090" have heavy Matte Textures. General Purpose Natural and Black Hdpe Sheet-Click Here. Marine Board - HDPE UV