Khedr Model GSD Horizontal Operable Shutter Dampers are specifically designed to regulate and equalize air pressure across partitions and duct systems. The blades are aerodynamically profiled and precisely positioned to respond automatically to pressure differentials. When internal room pressure increases, the blades lift and open, allowing excess air to discharge and effectively relieve pressure. As pressure decreases, the blades return to the closed position, ensuring controlled airflow and system stability.