Using this paper towel dispenser is easy. Just open the cabinet with the key provided with the tumbler lock. Then, load it up with single-fold paper towels. When the slots on the sides of the cabinet show, it's time to refill. As for installation, make sure you use the right screws and follow the instructions for your wall type. For maintenance, simply wipe the stainless steel surface with a soft cloth regularly to keep it looking great. Don't use abrasive cleaners as they can scratch the finish. If you have any issues with the lock or the hinge, contact Bobrick for support.