Buy One Get One Free when you purchase this bundle! Keep your BISSELL® air220 air purifier running at its best by replacing the HEPA + Pre-Filter every 6 months. Regular maintenance, including replacing the filter with Genuine BISSELL® filters, means your machine can keep capturing dust, pet dander, pollen, odors, and VOCs in the air. This HEPA filter captures 99.97% of 0.3 micron particles and smaller so you can breathe easy. BISSELL® proudly supports BISSELL Pet Foundation® and its mission to help save homeless pets. When you buy a BISSELL® product, you help save pets, too. We're proud to design products that help make pet messes, odors and pet homelessness disappear. Key Features 3 Stages Of Filtration Captures common household odors and allergens. Pre-Filter Captures large particles such as dust, hair and pet fur first. HEPA Filter Filters microscopic particles, like dust and allergens including pollen and pet dander. High-Efficiency Activated Carbon Filter Absorbs unwanted odors, including lingering cooking odors, odors from pets, smoke, and VOCs. " | HEPA + Pre-Filter & Activated Carbon Filter B0225 | BISSELL