Blocks dust, pet hair, and insects from being sucked into the AC, keeping the condenser and evaporator coils clean and efficient. Material: Nylon High Airflow: The fine screen maintains normal airflow without affecting cooling efficiency. What's in the box: 1x Front Intake Dust Filter 1x Rear Intake Dust Filter Note: This dust filter set is exclusively designed for the ZERO BREEZE Mark 2. It is NOT compatible with the Mark 3 AC Care & Cleaning Instructions: After prolonged use, simply remove the filters and rinse them gently with water. Do not scrub with a brush, as this may cause the mesh threads to fray.