PBK This mailbox post is made of heavy-duty galvanized steel. It can be used to mount all Postmaster approved rural mailboxes. The kit includes all assembly and mailbox mounting hardware. Features: -Mailbox mounting post. -Includes all assembly and mailbox mounting hardware. -Made of heavy-duty galvanized steel. -Decorative scrolls. -Fits postmaster approved rural mailboxes. -Dimensions: 56.5" H x 5.43" W x 8.25" D.