Using your mirrored wall decor set is easy. First, decide whether you want to hang the panels horizontally or vertically based on your room's layout and style. Use appropriate wall - hanging hardware suitable for the weight of the panels (total weight is 33 units). Make sure the wall surface is clean and flat before installation. As for maintenance, simply use a soft, dry cloth to wipe the mirror inserts regularly to keep them shiny. Avoid using abrasive cleaners on the satin - black metal framework as they may scratch the finish. Since this product contains nickel, handle it with care. If you have a nickel allergy, take extra precautions. And remember, if you're in California, be aware of the potential cancer - causing risk from nickel as stated in the CA Prop 65 warning.