Fill your environment with fresh, clean air using Levoit’s 3-Stage Original Filter. An effective 3-stage filtration system captures at least 99.97% of airborne particles 0.3 microns in size, so your surrounding air is free of harmful contaminants Increased Efficiency: The ultra-dense True HEPA filter reduces air resistance and increases efficiency with its advanced folded design 3-Stage Filtration: The filter uses a Pre-Filter, an H13 True HEPA Filter, and a High-Efficiency Activated Carbon Filter Trap Household Odors: The High-Efficiency Activated Carbon Filter traps smoke, fumes, VOCs, and household odors such as cooking smells, pet odors, and cigarette smoke H13 True HEPA Filter: The True HEPA Filter removes at least 99.97% of airborne particles 0.3 microns in size, including fine dust, pollen, smoke particles, and pet dander Series Name: Core 300-rf Height (Inches): 6.3 Length (Inches): 8 Width (Inches): 8 Carbon Filter: Yes Charcoal Activated Carbon Filter: Yes Filter Type: True HEPA Particles Removed From Air (Percentage): 99.97 Removes Bacteria: No Removes Dust: Yes Removes Mold: Yes Removes Odors: Yes Removes Particulates: Yes Removes Pet Dander: Yes Removes Pollen: Yes Removes Viruses: No Suggested Replacement Timeline: 6 months Warranty: 1-year Brand/Model Compatibility: Core 300 CA Residents: Prop 65 Warning(s): Yes UNSPSC: 10101500