20 CURTAIN RAILS, CURTAIN RODS, FASTENING MATERIALS FOR CURTAIN RAILS AND CURTAIN RODS, NAMELY WALL SUPPORTS, SIDE WALL SUPPORTS, CEILING BRACKETS, EXTENSION BRACKETS, BRACKETS AND SUPPORTS WITH SNAP-IN FASTENINGS, CONNECTING BRIDGES; NONMETAL CURTAIN HOOKS, NONMETAL CURTAIN RINGS, CURTAIN ROLLERS, CURTAIN GLIDERS, END STOPS FOR CURTAIN RAILS AND CURTAIN RODS