This top mount universal mailbox mounting post is constructed of extruded aluminum for strong durability and has a long lasting powder coat finish. No anchor is required, as this post is designed for in-ground installation and recommended to be set up in concrete. The Brighton post can accommodate a variety of standard and large size mailboxes ranging from lightweight to heavy duty. This unique mounting bracket has been designed to fit mailboxes with mounting holes either on the side or under the mailbox.