A:AnswerCheck the owner's manual. There is a very simple pinch release on both sides of the dust cup. Once the dust cup is off the handle, lift the lever at the end of the dust cup to open the lid. The accumulated dust--there will be a LOT--will then be easy to dump. There is also a filter in the upper handle that collects smaller dust particles. It must be removed and washed in plain water at least once a month; otherwise the vacuum will lose suction.
A:AnswerLaid flat you have 4.5 inches of clearance for the first 2 feet, then to about 6 as you near the motor due to the angle. Fits easily under standard bed frame.
A:AnswerFor assistance with Shark please contact Customer Care at 877-581-7375. Representatives are available Monday to Friday, 9AM to 9PM ET as well as Saturday, 9AM to 6PM ET.