Amazon.com - Replacement for iRobot Roomba 4100 Battery, Side Brush and Filters - Kit Includes 1 Battery, 5 Side Brushes and 5 Filters - Household Robotic Vacuums
Amazon.com - Replacement for iRobot Roomba 4100 Battery, Side Brush and Filters - Kit Includes 1 Battery, 5 Side Brushes and 5 Filters - Household Robotic Vacuums