Think about you do have a balloon full of air. Should you launch the tip, air rushes out within the higher-strain In the balloon on the lessen-pressure exterior. As their identify indicates, rigid ducts are inflexible and don’t have any danger of bends or kinks that bring about restricted airflow. https://pu-ducting-sheet83826.wikimeglio.com/9868483/the_basic_principles_of_pu_flexible_ducting