Shop for Seaboard® Grip-X® HDPE Sheet. Seaboard® Grip-X® is UV-stabilized HDPE marine board textured for enhanced traction and slip resistance. The nonskid surface has a diamond or dot pattern one side and standard matte finish on the other side. Grip-X® displays superior weatherability and will not delaminate, chip, rot, or swell. It’s ideal for steps, walkways, boat deck flooring, and swim platform applications. Available in both black and white, all Seaboard® Grip-X® HDPE sheet is UL 94-HB and RoHS complaint. White sheet is also FDA and USDA compliant. Can’t find what you need? Get a quote.