The kf310 replacement filter is compatible with Kenmore PM3020 Air Purifiers, Part Number # KF310. The high-efficiency kf310 filter combines a pre-filter, efficiency filter and activated carbon filter to filter particles and Absorb odors, creating fresh and purified air in your home or office throughout the day. With a long-lasting design, this filter offers efficient and reliable performance, making it an essential accessory for maintaining a healthy living environment. Package includes 4 x Pack kf310 Filter. Installation is a breeze – simply remove the old filter and slide in the new one, no tools required. For the best results, we recommend replacing the filter every 4 to 6 months. After replacement, remember to press the filter reset button for 3 seconds until the indicator light stops flashing to reset your air purifier. KF310 Replacement Filter Compatible with Kenmore 1500e Series PM3020 Air Purifier, 3-in-1 Filter Replacement, 4-Pack