The traditional shape of our Classic Curbside Mailbox is the only thing this mailbox has in common with a standard hardware store mailbox. The solid cast aluminum construction, with 20% thicker walls than our competitors, provides added strength and the powder coated finish will maintain a lifetime of beauty. The Ashland post offers several options for installation. They are provided with mounting hardware to attach them to an existing concrete pad and a bolt-on 18? direct burial post for new installation into concrete.