Designed to keep your CPAP therapy air clean, the optional DreamStation 2 Disposable Ultra-Fine Filters prevent fine particles and unwanted odors from entering your airway. The Ultra-Fine Filter is for use only with your DreamStation 2 Auto CPAP or BiPAP. This filter is disposable, so it cannot be cleaned. The Ultra-Fine Filter should be replaced every 30 days or when it shows signs of wear and tear to ensure your machine stays in tip-top condition while providing you with clean, filtered therapy air. Learn More About the DreamStation 2 Disposable Ultra-Fine Filter: Use With the Required Reusable Foam Pollen Filters for Ultimate Filtration Made of Polyester Fibers to Filter Out Fine Particles and Prevent Unwanted Odors Like Tobacco Smoke No Cleaning Necessary: Replace Every 30 Days Use With the Required Reusable Foam Pollen Filters for Ultimate Filtration Although the Disposable Ultra-Fine Filters are optional, they add a secondary level of filtration to ensure you have healthy therapy air. The Reusable Foam Pollen Filters block household dust and pollen and are required to run your DreamStation 2 Machine. By pairing the Reusable Foam Pollen Filters with the Disposable Ultra-Fine Filters, you take your filtration to the next level to keep fine particles from entering your airway. Made of Polyester Fibers to Filter Out Fine Particles and Prevent Unwanted Odors Like Tobacco Smoke If you’re sensitive to smells or fine dust and allergens, the Disposable Ultra-Fine Filter eliminates any fine particles and unwanted smells such as cigarette smoke for a fresh supply of therapy air. To ensure a quiet night, the Disposable Ultra-Fine Filters do not add any additional noise to your DreamStation 2. No Cleaning Necessary: Replace Every 30 Days Your Ultra-Fine Filter should be thrown out and replaced once a month. To replace your Ultra-Fine Filter, slide out your water chamber by pressing down on the release tab that mimics a fingerprint. Once you slide your water chamber out, both the Reusable Foam Pollen Filter and the Disposable Ultra-Fine Filter are located in the same place on the left side of the machine when the water chamber is removed. Pull the felt tab to remove the filters. To install the Ultra-Fine Filter, place it securely on the Foam Pollen Filter until it snaps into place. Once you clean your Reusable Pollen Filter or change either of the two filters, insert them back into your machine. Replacement Schedule Every 30 Days First Time Use Tips Do not detach the white filter from the blue casing—they are attached together. Cleaning / Maintenance Tips No Cleaning Necessary: Replace Every 30 Days 1142828,1142687,1142829,1142831