Effective Filtration: The duct air filter features a HEPA net that captures fine particles, helping to remove dust, catkins, and insects from the air, supporting a healthier indoor environment. Versatile Compatibility: This filter is compatible with various piping systems including PVC pipes, PE pipes, and aluminum foil tubes, offering flexibility for different ventilation setups. Maintenance Reminder: High-efficiency HEPA filters typically require replacement every 3 to 6 months, helping maintain optimal performance and air quality with minimal upkeep. Enhanced Airflow: Designed to minimize resistance while filtering, this inline ducting box allows for efficient airflow, ensuring your ventilation system operates smoothly without compromising air quality. Product Name: Duct Filter Pull-out HEPA Net Material: ABS shell, HEPA activated carbon composite filter net Size: 160mm Color: White Product Features: HEPA filters are generally replaced every 3 to 6 months. Package Contents: 1 x Duct Filter Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement allowance is +/- 1-3cm.