The Deflecto A045/9 Semi-Rigid Aluminum Duct is a fire-resistant, flexible ducting solution designed for specific ventilation requirements. Constructed from aluminum, this duct measures 4 inches in diameter and extends to 5 feet in length. Its semi-rigid nature allows for easier installation compared to fully rigid options, while maintaining structural integrity. The non-retail bulk packaging is ideal for B2B procurement, supporting efficient deployment in various installation scenarios.