General description The Replacement CPAP Filters for Philips Respironics Dreamstation includes a reusable filter slot and six disposable ultra-fine filters. This kit is designed to provide clean air for a healthier life, helping to maintain lung health and reduce the risk of potential diseases. The reusable filter slot is easy to replace and can be used for a cost-effective solution that also minimizes plastic pollution. Technical specifications Applicable models: DS500 / 700 Color: blue + white Material: ABS + cotton Size: 5.7 x 2.5 cm Reusable filter slot replacement frequency: every 3-6 months Disposable ultra-fine filters replacement frequency: every 2 weeks Measurement allowed error: +/- 1-3 cm Usage The foam filter blocks large particles. The ultra-fine filter blocks fine particles. Using both filters together provides the cleanest air. Other information Package Contents: 6 x Reusable Filter Slot, 6 x Disposable Ultra Fine Filters Note: Light reflection and different displays