Using the ASI 0210 - 41 paper towel dispenser is easy. Just reach in and pull out a towel, and it will keep feeding until the supply runs out. You can reload it with towels even if there are still some left inside, and it will continue to work properly. When installing, use the provided screws or anchors through the concealed mounting holes. The keyhole slots on the back make it easy to hang on pre - installed screws. Remember to install it at the right height according to the ADA standards. To keep it in good condition, wipe it regularly with a clean, dry cloth. Avoid using abrasive cleaners that could damage the matte black finish. The tumbler lock keeps unauthorized people from opening the dispenser, so keep the key in a safe place.