ROUND LOUVER RAL / 9016
The Round Louver is a kind of a shutter or blind that comes with horizontal slats that are angled to allow space for light and air but restrict rain and direct sunlight whereas dampers control the airflow.
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The small round weather louvers are designed to provide weather protection of outside air or discharge openings, yet allow free passage of air. These external louvres may also be useful for natural ventilation.