YUYIKES 10 x Aero Vac Filter for iRobot Roomba 500 600 Series 536 550 551 620 650 Vacuum Cleaner Accessory (10) Plastic Imported Compatible with:iRobot roomba 500/600 series (528 536 551 552 564 595 620 630 650 etc.) vacuum cleaning robots Reduces infiltration of dust, pollen and other allergens into the air you breathe Note:Replace the irobot roomba filter every 2-3 months to maintain roomba's cleaning performance while reducing infiltration of dust, pollen and other allergens The filters are easy to see and access, so you can snap them on and off with minimal effort Will not replace red or yellow standard filters