Compatible with ResMed Airsense 11 - This high-quality S11 filter fits perfectly in your ResMed Airsense 11 CPAP machine, making filter replacement easy and convenient. Clean Air - This product reliably filters out harmful micro-contaminants from your ResMed 11 CPAP supplies, ensuring the air you breathe is clean. This filter is thicker and denser than many filters on the market and is designed for superior micro-contaminant filtration. Safe - Our CPAP filters are made of safe, high-quality materials that are free of chemicals and Bisphenol-A. They are a great addition to your ResMed 11 CPAP supplies. Easy to Use - Our filters are designed to fit perfectly in your ResMed Airsense 11 filter, allowing you to easily replace the filter whenever you need to. Save Money - This product includes 60 filters that can be used with your ResMed Airsense 11 supplies. That's two years' worth of filters. EnduriMed Premium CPAP Filters Compatible with Resmed Airsense 11 Series, Ultra Fine, Hypoallergenic, Disposable Replacement Filters for CPAP Machines, 60 Filters