Postal Pro introduces Oxford 5 Ft. H Surface Mount Decorative Post. Instantly improve your home's curb appeal by installing this mailbox post. The design allows you to slide the post over an existing 4" x 4" treated pine post, eliminating the need to dig up any concrete that might be beneath the ground. The Oxford can accommodate one mailbox or two by simply adjusting the cross-arm placement during installation. All hardware necessary for installation is included. Treated pine 4" x 4" post is not included.