

The FB218 Insulated Flex Duct (part number: 13102409H) is a high-quality duct designed for heating, air conditioning, and ventilation systems. With a size of 9 inches and an impressive R value of 8.0, this duct ensures efficient airflow while maintaining optimal insulation. The silver jacket, reinforced with a grey polyester material and fiberglass scrim, provides durability. Its double-ply core made of black polyester enhances strength.