This fits your .
Make sure this fits
by entering your model number.
Duogreen replacement filter for irobot roomba 500 series.
Compatible with irobot roomba 500 series and professional series only.
Size: 8-1/2 by 7.2 by 1.9 inches
For best results, filters should be replaced every 2 - 3 months.
Duogreen Replacement Filter for iRobot Roomba 500 Series 3-Pack