Using this toilet paper dispenser is easy. First, open the pin tumbler lock on the stainless - steel door and place two standard toilet tissue rolls, each up to 5 - 1/4 inches in diameter, into the compartments. One roll will be exposed for immediate use. As you use the bottom roll and it gets depleted, the top roll will automatically drop into place. Make sure to keep the lock key in a safe place to prevent unauthorized access. For maintenance, regularly clean the dispenser with a mild soap and a soft cloth. The satin finish on the exposed surfaces resists fingerprints, but it's still a good idea to wipe it down from time to time. Avoid using abrasive cleaners as they may damage the finish. Also, check the rollers periodically to ensure they are rolling smoothly. If the dispenser is recess - mounted, be careful not to damage the flange or the rough opening during cleaning or when replacing the rolls.