•3 Stages of Filtration: A pre-filter, a True HEPA filter, and a carbon filter work together to capture up to 99.97% of all dust, pollen, and allergens as small as 0.3 microns •Pre-Filter: Captures dust, hair, and other large particles •True HEPA Filter: Captures up to 99.97% of all smaller particles (as small as 0.3 microns), including dust, pollen, mold spores, and pet dander •Carbon Filter: Helps capture and reduce household odors caused by pets, cooking, smoke, and more •What's Included: 1 Bionaire True HEPA 360-degree air filter •Compatible with Bionaire air purifier model BAP360W Create a soothing oasis of pure, crisp air with the Bionaire True HEPA 360° Air Filter. Compatible with the Bionaire True HEPA 360° Air Purifier (BAP360W), this air filter features a 3-stage filtration system to capture up to 99.97% of airborne particles as small as 0.3 microns. The 3-stage filtration system captures unwanted dust, smoke, pollen, mold spores, and pet dander to deliver pure, clean air all around you. It starts with a pre-filter that captures large particles like hair and dust. The True HEPA filter eliminates up to 99.97% of particles as small as 0.3 microns (the size of smoke or pollen particles). The carbon filter layer keeps your air clean and odor-free. For the best results, change the air filter in your Bionaire air purifier every 8-12 months. Package includes 1 True HEPA 360-degree air purifier filter for the Bionaire True HEPA 360° Air Purifier (BAP3