Black. 12″ L x 27″ W. 1/2″ Thickness. When it comes to creating new accessories or replacing wood, laminates or plastic parts on a boat, builders count on our KingStarboard Marine Starboard Polymer Sheets. These Polymer Sheets are environmentally stabilized to withstand the harshest marine conditions. They will not warp, rot, or delaminate when exposed to humidity or water. Using standard woodworking tools, easily fabricate the Polymer Sheets to match your needs. High density, UV-stabilized polyethylene marine starboard. Individually wrapped.