The third stage sees the medical HEPA filtration come into use

the stage unique to the Austin Air Bedroom Machine

One replacement exhaust filter is included as well

The powerful AeroVac Bin is the latest breakthrough in cleaning technology which pulls additional hair and debris off Roomba's brushes

Contains one (1) filter

iRobot Easy Clean Brush for Roomba 400 Robotic Cleaners The third stage sees the[custom_html] The iRobot Roomba 400 series vacuum cleaning robots clean up to three standard sized rooms on a single charge. It comes equipped with an extra set of easy to clean brushes, a high capacity sweeper bin for trapping even more pet hair, cat litter or dander, and cleaning tools for ensuring both sets of brushes remain free of debris so they can perform optimally. Its sturdy, counter rotating brushes dig deep into carpet fibers to grab dirt,