Metalflex - Non-insulated supply/return flexible aluminum air duct are designed for use in return plenum ceilings or other areas with demanding safety requirements.
This product is UL Listed as a Class 0 Air Duct in accordance with the NFPA 90a & 90b. It is a non-insulated, high pressure, flexible aluminum "Metalflex" air duct. Our design allows for better stretching and bending characteristics. This helps eliminate flattening on the outside radius of a bend thus preventing restricted airflow. Crimped end slides into plain end, ensuring smooth connections