The F116 10 25 Double Ply Black Poly Flex Duct R-6.0 by Mueller Streamline is designed for superior airflow and insulation. This flexible duct features a double-ply construction, ensuring durability and resistance to wear. With an R-value of 6.0, it provides excellent thermal insulation, making it ideal for HVAC applications. The duct measures 10 inches in diameter and 25 feet in length, allowing for versatile installation options. Its black poly finish not only enhances aesthetics but also protects against UV degradation. This duct is compliant with industry standards, ensuring reliable performance in various environments.