The Daikin 4023394 is a washable replacement air filter designed for use in select Daikin indoor mini split units. It's a direct replacement for the standard air filter included with the following Daikin ductless systems: ATXC Series ATXC60BV1B, ATXC71BV1B FTK Series FTK18AXVJU, FTK18BXVJU, FTK24AXVJU, FTK24BXVJU FTKA Series FTKA50AV1H, FTKA50BV1H FTFK Series FTFK60AV1, FTFK60AVL FTKU Series FTKU60AV1, FTKU71AV1 FTX Series FTX18AXVJU, FTX18BXVJU, FTX24AXVJU, FTX24BXVJU FTXB Series FTXB18BXVJU, FTXB24BXVJU FTXC Series FTXC60BV1B, FTXC71BV1B FTXNG Series FTXNG18AXVJU Each wall unit requires two filters. Filter Dimensions: 16" x 15" Maintenance & Care Instructions Cleaning Frequency: Vacuum the filter gently with a soft-bristle brush every two weeks. When visibly dirty, wash with a mild detergent in lukewarm water to remove dust and buildup. Drying: Allow the filter to dry completely in the shade before reinstalling. Avoid direct sunlight or high heat. Do not operate your mini split system while the filter is removed or drying, as this can allow dust to enter the unit and cause internal buildup or mold growth. Replacement: With regular cleaning, the filter can be reused for an extended period. For best performance, replace it annually—or sooner if it shows signs of wear, damage, or cannot be fully cleaned after washing. One pack contains two (2) filters.
