Using the Deltana 6 - inch Solid Brass Number 7 is easy. You can attach it to your house exterior for your house number or use it indoors as a decorative element. When installing outdoors, make sure the surface is clean and dry. For indoor use, you can choose a prominent spot to display it. As for maintenance, simply wipe it with a soft, dry cloth regularly to keep its shine. Avoid using harsh chemicals as they may damage the finish. If it gets dirty, you can use a mild soap and water solution, then dry it thoroughly right away.