iRobot Roomba 880 Debris Extractor Set and HEPA Filter - Replacement Kit Includes 1 Debris Extractor Set and 1 HEPA Filter Replacement iRobot Roomba 880 Debris Extractor Set and HEPA Filter Filters reduce infiltration of dust, pollen and other allergens. Replace filters and side brush every 2 to 3 months for best performance. Counter-rotating extractor design breaks down debris and lifts dirt Please check your Roomba to make sure you are purchasing the correct parts On Sale for a Limited Time! Please check your Roomba to make sure you are purchasing the correct parts.