The F118 08 50 Double Ply Black Poly Flex Duct R-8.0 by Mueller Streamline is designed for efficient air distribution in HVAC systems. This flexible duct features a double-ply construction, ensuring durability and resistance to punctures. With an R-value of 8.0, it provides excellent thermal insulation, making it ideal for both residential and commercial applications. The duct measures 8 inches in diameter and is 50 feet long, allowing for versatile installation options. Its lightweight design facilitates easy handling and installation, while the black finish enhances aesthetic appeal. This product complies with industry standards, ensuring reliable performance in various environments.