Effective Filtration: The duct air filter is designed with a HEPA net that captures fine particles, making sure that dust, catkins, and insects are effectively removed from the air, promoting a healthier indoor environment. Versatile Compatibility: This filter is compatible with piping systems including PVC pipes, PE pipes, and aluminum foil tubes, making it a flexible solution for different ventilation setups. Size: Available in inner diameters of 110 mm , this filter caters to installation requirements, making sure a snug fit for your specific ducting needs. Maintenance Reminder: With high-efficiency HEPA filters typically requiring replacement every 3 to 6 months, this product helps 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, making sure that your ventilation system operates smoothly without compromising on air quality. Color:As Shown Material:plastic Package Contents: 1 * Duct Air Filter 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.