This Ductless Downdraft Vent Kit. Black Can Be Used When Venting Your Appliance Where Venting To The Outside Is Either Not Possible Or Not Desirable In The Kitchen. This Kit Contains A Filter Housing That Attaches To The Blower Under The Unit; The Filter Cleans The Air Before It Re-Enters The Home. This Accessory Can Be Used With Several Brands; Check To See If Your Model Number Is Compatible. Measures Approximately 20L X 13W X 12H. Installing This Accessory Will Require Basic Hand Tools And Novice Repair Experience. Remember To Turn Off The Appropriate Circuit Breaker Before Installing This Part. Helpful Tip: Change The Filter Every 6 Months Or When A Loss Of Airflow Can Be Detected. (Filter Part Number W10177003)