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Enhance your heating and cooling efficiency with the Lambro 3" x 8' Flexible Semi-Rigid Aluminum Duct. Designed for versatility and durability, this duct is perfect for a variety of HVAC applications, providing reliable airflow and temperature control in your home or workspace. Its semi-rigid construction allows for easy installation and maneuverability in tight spaces, making it an ideal choice for both new installations and retrofits.