[Applicable models] For 166521562156a, powerforce 16651613056. The filter assembly is installed inside the dirt tank to select the vacuum of the carbon canister. The filter can be cleaned. Rinse with warm water and mild detergent. Make sure that the filter is completely dry before returning to the machine. According to the service condition, it is recommended to replace the filter every 3-6 months. Clean filters maintain best suction levels. Dirty filters restrict airflow and greatly reduce suction. Made of high-quality materials to vacuum safety and always in working condition. The filter keeps the robot clean while reducing the penetration of dust, pollen and other into the air you breathe. Colour: Silver+Black Material: Plastic Package Contents: 4 x Vacuum cleaner accessories 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. Note: Please allow 1-3 mm error/1-3g weight error and actual product color may vary due to lighting conditions.