General description Our 90 Pcs CPAP HEPA Air Filter set is designed to provide clean air for a healthier life. These ultra-fine filters effectively block even the smallest dust particles, ensuring that you and your CPAP machine breathe fresh air with every use. Made from high-quality, BPA-free materials, these filters are safe and easy to use, allowing you to breathe easier without the risk of allergies or harmful contaminants. Technical specifications Quantity: 90 filters Color: White Material: Cotton Size: 2 1/8 inches x 1 7/16 inches (approximately 3.5 x 5.3 cm) Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with most CPAP machines, including all CPAP and BiPAP machines in the S9, AirSense AirCurve, and AirStart series. Usage Designed for easy changing, replacing, or disposing of filters. Provides clean air to reduce the risk of allergies and harmful contaminants. Other information Light reflection and different displays may cause the color of the