16PCS Replacement HEPA Filter for iRobot Roomba Combo J7+ J9+ Well-made, durable, and highly matched to the original equipment. Clean accessories enable your home robot to maintain optimal performance. Accessory contents are easy to remove and replace as part of routine maintenance. Helps reduce dust, pollen, and other allergens from the air. To achieve the best cleaning and filtration effect, replace cleaning accessories every 2-3 months depending on usage frequency. The filter functions to capture dust, dirt, and other impurities吸入 by the robot vacuum, helping keep the unit clean and operating properly. It also helps prevent dust and debris from entering the motor and internal components, contributing to longer device life. Material: Plastic Color: As shown Package Contents: 16 x Filter Note: Light reflection and different displays may cause slight color variations between the image and actual item. Measurement error allowed is +/- 1-3 cm.