Cow and Calf Pair Mailbox Topper Metal Mailbox topper is cut from steel about as thick as a nickel. Tabs are bent for easy attachment to mailbox. This large mailbox topper is 18″ wide and 6″ tall. It fits onto standard mailboxes and looks size-appropriate on large boxes as well! Sign has been powder-coated glossy black for a durable and long-lasting finish. You will need to drill 2 holes into top of box, so washers are required to prevent moisture from entering mailbox. Hardware to attach to mailbox is included in your order. The mailbox topper is designed so you could also attach it to a wood fence or railing. Order includes one mailbox topper and hardware to attach to mailbox. Order does not include a mailbox. All of our products are 100% made in the USA and made to last. Watch for more mailbox toppers to come in our shop!