19 Non-metal rigid synthetic sheet piling; non-metallic building materials covered with plastic, namely, beams, decking, wales, piles, posts and railings, for use in playground structures, seawalls, retaining walls, decks, and fences; sheet piling components of vinyl, PVC and polymeric composites, namely, synthetic vertical panels, wall capping, for construction of athletic field wall, wind screen walls, and privacy walls, all of the foregoing not for use in the construction of modular, manufactured, and mobile buildings or service related to modular, manufactured and mobile buildings; synthetic sheet piling constructed of vinyl, PVC, and polymeric composites