Rotating hood for ventilation pipes, smoke stacks, and air extraction. Made of galvanized metal, very light, and resistant to the elements. Installs quickly and easily to the extraction pipe. Hat designed to rotate with the action of the wind, so that the more the wind blows, the more the blades rotate, and the more powerful the air suction from the inside to the outside. It prevents the wind from entering with force inside the pipe, chimney, stove, etc., thus avoiding the undesirable effect of the house full of smoke. specs Rotating hood for ventilation pipes, smoke stacks, and air extraction. Made of galvanized metal, very light, and resistant to the elements. Installs quickly and easily to the extraction pipe. Hat designed to rotate with the action of the wind, so that the more the wind blows, the more the blades rotate, and the more powerful the air suction from the inside to the outside. It prevents the wind from entering with force inside the pipe, chimney, stove, etc., thus

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