iRobot Roomba 675 Black Auto Charging Robotic Vacuum Wall Tile ) 6 lb Shelf Features ) 6 lb Shelf Features Concealed Hardware Returnable 180 Day Shelf Included Components Mounting Hardware Product Depth (in and 48 inches 120 inches (optional center bracket included for longer lengths) Durable: holds up to 25 pounds Featuring durable auto adjust cleaning head works on carpets and hard floors Cleans carpets and hard floors auto adjust cleaning head automatically adapts its height to effectively clean carpets and hard floors Automatically recharges runs for up to 90 minutes before automatically docking and recharging