The mailbox is for more than bills! Cheer up the mailbox by putting it on the Mayne Westbrook Plus Mail Post. This heavy-duty plastic mail post cover goes over a standard 4- x 4-inch post to create an elegant and versatile post. It's built from molded heavy-duty polyethylene with UV inhibitors to protect your choice of color, and includes a large decorative post, mailbox support arm, and rear-mounted flower planter. A small mailbox is recommended, at least 7 inches wide and weighing less than 7 lbs. Use a 4- x 4-inch post at least 78 inches high.