19 Building materials (non-metallic), non-metallic rigid pipes for building, window frames and fa?ade elements (not of metal), bridges (not of metal), stairs (not of metal), grids and planks (not of metal); building materials, not of metal, rigid pipes for building, window frames, fa?ade or partition components, panels, and elements for mounting such panels, prefabricated bridges, staircases, gratings and planks; building materials (not of metal), including building components, beams, panels, guards, coatings, staircases, ladders, platforms, nacelle floors, helihoists and tower scaffolding covers, including supports and towers for engine cells for wind turbines, rigid pipes, not of metal, for building, window frames and fa?ade elements (not of metal), supports, including adjustable supports, for windows (not of metal), bridges (not of metal), staircases (not of metal), ladders (not of metal); gratings and planks (not of metal); building panels, not of metal; claddings, non-metallic, for buildings; non-metal roof coverings; wall claddings, not of metal, for buildings; structures of glass-fibre reinforced plastic for building, structures of carbon reinforced plastic for building, plastic strip for building, rods of plastic for building, plastic plates for building purposes, reinforcing materials, not of metal, for building, frameworks for use in building (non-metallic), building materials (non-metallic), wall linings, facings, not of metal, for building, construction beams, not of metal; rigid pipes, not of metal, for building, window frames (not of metal), bridges (not of metal), staircases (not of metal), gratings and planks (not of metal), non-metallic profiles for building construction for windows and wind turbines; glass-fibre building materials (not of metal), including planks, panels and wall claddings; glass-fibre building materials (not of metal), including planks, panels and wall claddings; glass-fibre panels, not of metal; fibreglass (building materials); glass-fibre building panels; cladding of fibreglass for building; roofing of fibreglass; cladding of fibreglass for walls; artificial panels for building; profile sections, including profile sheeting, profile mouldings and solid profile bars, all the aforesaid materials of pultruded plastic for use in construction; profile sections, including profile sheeting; profile mouldings and fixed profile bars; all the aforesaid goods of pultruded plastic for use in construction; building materials (non-metallic); and parts and accessories (not included in other classes) for these goods; plastic-based profiles for use in building load bearing constructions