The Smart Flow Elbow Kit from Mueller Streamline includes two ELS and zip ties, designed for efficient airflow management in HVAC systems. This kit provides a reliable solution for creating smooth transitions in ductwork, enhancing overall system performance. The components are made from durable materials, ensuring long-lasting use and compliance with industry standards. Ideal for both residential and commercial applications, this kit simplifies installation and improves airflow efficiency, making it a valuable addition to any HVAC setup.