Neato Botvac 85 High Performance Filter & Side Brush - Replacement Kit Includes 4 High Performance Filter & 4 Side Brush Replacement Neato Botvac 85 High Performance Filter & Side Brush Filters reduce infiltration of dust, pollen and other allergens. Six times more surface area than standard filters, Neato Botvac High-Performance Filters pick up and captures particles as small as 0.3 microns. Replace filters and side brush every 2 to 3 months for best performance. Side Brush features precise edge cleaning - get deep into crevices and corners 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.