19 Non-metal swimming pools, building materials, and parts and accessories therefor, including, swimming pool liners, fitted swimming pool covers, swimming pool steps, ladders, pool backs, swimming pool wall panels, wall braces, panel corners, bracing supports and coping; Motorized fitted swimming pool covers; fitted swimming pool covers featuring fabric and structural webbing components therefore, sold as a unit; pool cover retractors and guides for fitted pools; fitted pool cover components, namely, brackets, tracking, webbing and lids; pool cover ropes; non-metallic swimming pools