- Compatible Models: This package includes three 500/600 Dual Protection Filters specifically designed for Blueair Classic 500/600 Series Air Purifiers, including models 501, 503, 505, 510, 550E, 555EB, 580i, 601, 605, and 680i. Please verify your air purifier model before purchasing. - Dual Protection Filter System: Our filters feature a Dual Protection System combining a high-quality H13 true HEPA filter with an activated carbon filter. This robust design ensures durability and longevity, providing you with fresh air and convenience in your home. - H13 True HEPA Filtration: The H13 true HEPA filter captures 99.97% of particles as small as 0.3 microns, including pollen, dust, pet dander, and other small allergens. Meanwhile, the activated carbon filter effectively absorbs smoke, cooking odors, pet smells, VOCs, and other household odors, ensuring a clean and pleasant environment for you and your pets. - Easy Installation: Replacing your filter is a breeze. Simply remove the old filter and insert the new Classic 500/600 Series Replacement Filter, ensuring the side marked 'Facing in' is oriented towards the fan. For optimal performance, we recommend changing the filter every six months, depending on usage. - Practical Applications: Ideal for households with pets, allergy sufferers, or anyone seeking improved indoor air quality. These filters are perfect for use in living rooms, bedrooms, or kitchens, enhancing your overall comfort and well-being. Experience the difference with our reliable replacement filters, designed to keep your indoor air clean and healthy.