The product is a genuine BlueAir 500/600 Series Dual Protection Air Purifier Filter Replacement. This filter is designed specifically for use in Blueair air purifiers, providing dual protection for clean and healthy indoor air. With a pack containing 1 filter, this product is essential for maintaining the efficiency and effectiveness of your Blueair air purifier in removing impurities and contaminants from the air. Trust the Blueair brand to deliver high-quality filtration solutions for your home.