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F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
Structure en tubes permettant de maintenir en place differentes toiles adaptees a la protection du soleil zenithal, du vent horizontal et de la pluie diagonale, particulierement sur une terrasse