Continue to enjoy a clean, fresh flow of air while you sleep with the Philips DreamStation Filters Kit. It comes complete with 2 reusable and 6 disposable pieces, making it simple to swap out dirty trays as needed for a more hygienic user experience. This kit of ultra-fine pollen filters are designed to work specifically with the Philips Respironics DreamStation, providing you with a high-quality performance every time you use them. Each unit is built to stop dirt and pollen, allowing you to get a restful night's sleep. This pack of Philips Respironics DreamStation filters make it easy to keep your CPAP machine operating optimally.