Usage Tips:CPAP Filters are engineered to be compatible with for AirSense 11 CPAP machines, providing a convenient and secure fit for uninterrupted therapy sessions. Effective Particulate Filtration Helps trap airborne particles such as dust and pet dander, supporting cleaner airflow through your CPAP system. Simple Installation and Replacement These filters are easy to insert and replace. For optimal performance, it is recommended to replace filters every 2 weeks or sooner depending on usage and environment. Maintain CPAP Machine Efficiency Regular replacement helps maintain your CPAP device's airflow and internal cleanliness, contributing to consistent performance over time. Economical 24-Pack Supply Includes 24 disposable filters, offering a long-lasting solution for your ongoing CPAP filter needs-up to a year of use under typical conditions. Color: White Material: Cotton Package Contents: 24 x CPAP Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.