New Factory Sealed 6 Month Filter Kit for the Philips Respironics DreamStation-ONE CPAP BIPAP. Filters: 1 Reusable 6 Disposable (3 2-Packs). 2 Packs and Single Packs keep your filters sealed and fresh longer. We are a Board of Pharmacy Licensed Respiratory Supply Reseller. Not for Dreamstation 2. Filters are made by Spirit, a USA Company.