Say hello to the ARYA Go Left & Right Gross Particle Filters. These little wonders work tirelessly to keep dust and particles from sneaking into your ARYA Go portable oxygen concentrator while it draws in fresh air. Not only do they excel at protecting the air intake screens, but they also keep those pesky dust mites, pollen, and other unwelcome guests at bay. By keeping your particle filters clean and effective, you're ensuring fresher air and helping to extend the life of your ARYA Go portable concentrator. You'll receive both Left and Right filters, making upkeep a total breeze. Just give them a wash once a week and swap out any that are damaged as needed. Plus, removing and replacing the filters is incredibly simple, so you can spend less time on maintenance and more time enjoying the benefits of your ARYA Go.