Using this dispenser is easy. First, install it by fitting it into the rough wall opening that measures 26 - 5/8″ W x 12 - 5/8″ H x 4″. Make sure it mounts flush against the side wall. To load the toilet tissue, open the dispenser on the left side and place the rolls. For the seat - covers, open the dedicated dispenser and insert up to 500 paper covers. When it comes to waste disposal, simply unlock the unit, remove the waste container, empty it, and put it back. Remember to keep the dispenser clean by wiping it with a soft, damp cloth regularly. Do not use abrasive cleaners as they can damage the satin - finish stainless steel. Also, ensure that the lock is always in good working condition to maintain security.