- Efficient filtration and breathing protection: A 3 mm thick design using premium fiber material captures pollen, dust, and more, creating a clean air intake for the ventilator and helping you breathe fresh air each night. - Precise fit and easy installation: Sized exactly for the ventilator; installation requires only two steps: open the cap, insert, close and start. No complicated operation; easy to replace, saving time and worry. - High quality, durability, and cost efficiency: Premium materials, thick structure, and appropriate pore size provide durable, stable filtration with less frequent replacements and lower long-term costs for users. - Thoughtful design for an improved experience: Aligns with the ventilator’s internal structure and seals well after installation; does not affect normal device operation; low resistance and high filtration efficiency ensure smooth ventilation, making sleep breathing therapy more comfortable. - Use scenarios: - Nighttime sleep therapy with a ventilator to maintain clean intake air. - Seasonal pollen or dusty environments to reduce irritants in the airflow. - Long-term home care with nightly ventilator use, reducing maintenance frequency and ongoing costs.