Replacement 3-Pack iRobot Roomba 545 Pet Series Filter - For iRobot Roomba Robotic Vacuum Parts Replacement iRobot Roomba 545 Pet Series Filter These filters are for Roomba vacuums with Aerovac bins Replace filter every 2 to 3 months for best performance Please check your Roomba to make sure you are purchasing the correct parts On Sale for a Limited Time!