The Daikin-McQuay 4009462 Upper Horizontal Vane is an airflow-directing component designed for compatible ductless mini-split and air conditioning indoor units. It works by adjusting and guiding the direction of conditioned air as it exits the unit, helping distribute cooling or heating more evenly throughout the space. Commonly used in residential and light commercial HVAC systems, t... https://www.partshnc.com/4009462-daikin-mcquay-upper-horizontal-vane