Using the Bobrick B - 263 paper towel dispenser is easy. Just pull a single - fold towel from the dispenser, and it will dispense one at a time. When the cabinet slots show that it's time to refill, open the cabinet using the key provided with the tumbler lock and insert new paper towels. For installation, if you're mounting it on a wall, use #8 x 1 - 1/4 inches (4.2 x 32mm) sheet - metal screws (not included). Make sure to follow local building codes, especially for plaster or dry - wall construction. Provide concealed backing or use fiber plugs, expansion shields, toggle bolts, or expansion bolts as needed for different wall surfaces. To keep it in good condition, regularly wipe the satin - finish stainless steel surface with a soft, dry cloth. Avoid using abrasive cleaners that could scratch the surface. If the tumbler lock or hinge has any issues, contact the manufacturer for assistance.