For Philips Robot Vacuum Cleaner FC8013 FC8774 FC8772 FC8776 The filter can maintain cleaning performance while reducing the infiltration of dust, pollen and other allergens into the air you breathe (for best results, the filter should be replaced every 2-3 months). Side brush reaches deep into corners and edges to remove more dirt, dust and debris. Superior quality products keep your vacuum cleaner running at peak performance. Easy to remove and replace as part of routine maintenance.