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46N06 is a genuine OEM Lennox single outlet installation kit designed for use with 1-inch (25mm) fiberglass plenum ductboard, featuring a 2-inch diameter outlet with an R-3.2 insulation rating. This kit provides a reliable, thermally efficient connection point for Lennox HVAC duct systems, reducing heat transfer losses and maintaining consistent conditioned airflow. Damaged or improperly sealed plenum connections can result in energy loss, comfort issues, and increased wear on your Lennox system — this OEM kit ensures a factory-correct installation every time.