FDA 21CFR177.1520 Sec. 2.1, ASTM D4976, PE244, ASTMD1248 Type IV, Class A, Fed Spec LP512, Type 1, Class H, Grade 5; HDPE Marine Board. UV Stabilized Textured - Matte Surface FDA- and USDA-approved materials Non Rotting-Swelling, Splintering or Delaminating when exposed to humidity or Moisture Does Not HENAN OKAYorb Water .