Constructed from durable, galvanized steel, the body of the Cambridge™ post mount mailbox is fully powder coated in black for extended wear. The textured, molded resin frame features a decorative handle which adds character and elegance. Pre-drilled holes allow for easy installation. The Landover mailbox post is constructed of reinforced extruded aluminum and steel to resist rust and provide an extended service life. This post comes complete with a mounting bracket and mounting hardware and easily slides over a 4 in. x 4 in. wood post. Post mix or concrete is suggested for extra in-ground installation support. Pair with Metrolina Greenhouses sun loving perennial's curated selection for an elevated curbside. Coleus are simultaneously classic and modern annuals, adding stunning colored foliage with unique leaf designs and shapes to a garden or decorative container. Rudbeckia, also known as Black Eyed Susan, is a wildflower native in the central United States. Their clump-forming habit makes them the perfect perennial to add in a sunny location in a landscape or container. Salvia thrive in full sun and well-drained soil; Plant in groupings of three or more to add instant garden appeal. Additional soil may be required based on type of decorative container size and volume. Keep federal regulations in mind when placing your new mailbox. Position your mailbox 41 to 45 inches from the road surface to the bottom of the mailbox or point of mail entry. Place your mailbox 6 to 8 inches back from the curb. If you do not have a raised curb, contact your local postmaster for guidance.