For Irobot Roomba S Series S9 S9+ Plus Robot Vacuum Cleaner High Efficiency Filter Kit Replacement Spare Parts Accessories Parts The replacement hepa filter out is definitely matched with FOR iRobot Roomba S-Series Vacuums: S9 9150 S9+ Plus 9550 Wi-Fi Connected Robot Vacuum. Made of high-strength and environmentally friendly materials, the S9 filter works completely with your robotic vacuum. High performance HEPA filter out captures as much as 99% of dust, dirt, puppy hair and small particles. It is simple to exchange and set up on the robot vacuum. To hold your iRobot Vacuum operating at top performance, it's endorsed to change elements each 2-3 months. size: 135 x 75mm Material: plastic colour: black Package Contents: 4 x sweeper filter Only the above package content, different merchandise will not be included. Note: Light reflection and diverse reveals can cause the color of the thing within the photograph just a little diverse from the real thing. The measurement allowed error is +/- 1-3cm.