The convenient Check Filter Indicator reminds you when it might be time for a new filter. Keep airborne contaminants out of your home with the Core 300 Air Purifier. The Pre-Filter captures large particles like lint and hair. The Main Filter captures at least 99. 97% of airborne particles down to 0. 3-microns in size. The High-Efficiency Activated Carbon Filter with ARC Formula adsorbs odors and VOCs. The air purifier uses VortexAir Technologys spiral 360 airflow to quickly refresh air in a medium-sized room such as a kitchen or living room. Keep your space fresh with LV-PUR131-RF Replacement Filters for the Levoit LV-PUR131 or LV-PUR131S Smart Air Purifier. With 3-stage filtration, you can filter a variety of fine airborne particles such as hair, lint, fibers, and more. Enhanced with the exclusive Levoit ARC Formula, the Custom High-Efficiency Activated Carbon Filter helps neutralize and break down household odors, smoke, and fumes, while filtering compounds and VOCs (volatile organic compounds). Fine Pre-Filter: Captures large particles such as lint, hair, and fibers. Main Filter: Filters a variety of fine airborne particles while adsorbing odors and VOCs (volatile organic compounds). High-Efficiency activated Carbon Filter: Helps neutralize smoke, odors, and fumes while VOCs, and household odors like cooking smells and pet odors. ⚠ WARNING: California Proposition 65 Warning. This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www. P65Warnings. ca. gov.