30PCS CPAP ULTRA FINE FILTERS: Designed to capture fine dust particles to help maintain cleaner air and support the performance of your CPAP machine. PRECISE FIT: Each filter measures 2 1/8 inches x 1 7/16 inches to fit securely in compatible devices. ENGINEERED FOR FILTRATION: Each filter is constructed to help reduce dust and airborne particles. SAFE AND RELIABLE: Made from high-quality materials, these ultra-fine filters are BPA-free and free of chemical odors. They are designed for easy installation, replacement, and disposal. BREATHE WITH CONFIDENCE: Helps provide cleaner air for a more comfortable experience. COMPATIBLE WITH VARIOUS MODELS: Fits most CPAP and BiPAP machines, including S9 series, AirSense, AirCurve, and AirStart series. SPECIFICATIONS: Color: White Material: Cotton Size: 3.5 x 5.3 cm Package Contents: 30 x CPAP Filters Note: This product is manufactured and distributed according to the regulations of its country of origin. The package includes only the items listed. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by +/- 1-3 cm.