SEBO D4 & K Series Parquet Brush Green Klean Air Purifiers For larger homes additional NorthStar For larger homes additional NorthStar Navigation Cubes can be purchases to expand the robots dry mopping distance up to 2 You can also supplement the Pro Ms ability to absorb and neutralize gaseous air particles and odors installing a Blueair Pro Carbon+ filter or by substituting the HEPASilent filter with a Blueair SmokeStop filter A durable polymer construction works in conjunction with sectioned short bristles to provide comprehensive cleaning of the dirt and dust found on virtually any hard floor surface and features a button lock mechanism to help make sure the nozzle stays attached to the tube