3/8&rdquo; Marine Hechtout Okoume Plywood 2&rsquo; x 4&rsquo; 1 piece of unfinished Hechthout Okoume Marine Plywood 3/8 thickness and 2 wide x 4 long Nicest marine plywood - A grade surface on both sides and all the way through the plys. Plywood is extremely smooth and will take veneer, paint or fiberglass very nicely. Exterior Glue, solid plys with no voids between plys.