Custom Semi Truck Mailbox Topper. The mailbox topper becomes slightly taller when the text box is added. This large mailbox topper is 17" wide and 9" tall. It fits onto standard mailboxes and looks size-appropriate on large boxes as well! Sign has been powder-coated for a durable and long-lasting finish. We do not manufacture or sell complete mailboxes. Your order will not include a mailbox. Just add your text in line one. If you would like both sides with text add that in line 2. Text is applied with a weather-safe white vinyl decal. 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. We hope you'll love our mailbox toppers as much as we love making them! All of our products are 100% Made in United States of America and made to last. Watch for more mailbox toppers to come in our shop!