The Whirlpool W11548459 Range Hood Wall Canopy Recirculation Kit helps improve kitchen air quality by filtering and recirculating air when external venting is not available. This kit is designed for compatible wall canopy range hoods and includes the necessary components to convert the hood into a recirculating system. It works by capturing smoke, grease, and cooking odors through int... https://www.hnkparts.com/whirlpool-w11548459-range-hood-wall-canopy-recirculation-kit