Using the Deltana 4 - Inch Solid Brass Residential Letter E is easy. Just find a suitable spot at your entrance, like next to the door or on a mailbox, and install it. When installing, make sure the surface is flat and clean. For maintenance, use a soft cloth to wipe it regularly to keep it looking shiny. Avoid using abrasive cleaners as they may damage the finish. If it gets wet, dry it promptly to prevent rust. This letter can be used for both residential homes and commercial buildings to show your address clearly and add style.