Solar Group Inc's MB10 Mailbox Mounting Bracket helps you set your customized mailbox up. They utilize a heavy-duty construction for stability and durability. The Solar Group Inc's Mailbox support brackets are capable of adjusting their size to accommodate for any sized rural mailbox that are approved by the postmaster. Wooded mailbox post brackets for mountingFits all postmaster approved rural mailboxesHeavy duty constructionEasy installationAdjustable size