The Soler and Palau PER-160 W plastic louvre back draught shutter is designed to block unwanted reverse airflow in ventilation systems. Manufactured from durable plastic, it offers reliable performance while maintaining smooth and efficient airflow. The louvre design provides effective protection against draughts and external debris, helping to improve system efficiency. Suitable for a wide range of fan and ducting applications, this shutter is a practical accessory for maintaining proper ventilation in residential and commercial environments.