The Gibraltar Mailboxes ADM16B01 Admiral mailbox has a traditional appearance that will go with any house and is sturdily built from rust-proof aluminum. In addition to protecting against rust, its aluminum composition also provides corrosion-resistant qualities to increase its usefulness. The Admiral features an internal body strap and a unique door brace to boost strength despite being 60% thicker than typical regular mailboxes. The revolutionary door bracing is specifically made to keep rain from entering the interior and damaging your mail. big capacity is featured to accommodate larger package and box deliveries. This sturdy mailbox has a textured powder-coated finish that adds protection while giving it a distinctive look. You need go no farther than the Admiral aluminum mailbox if you want to quit replacing mailboxes because of rust and corrosion. Aluminum that won’t rust offers defense against the elements and salt! A patented door design enhances durability while keeping the rain out. Compared to most regular mailboxes, a specially reinforced body brace boosts strength by using 60% thicker material. Greater capacity accommodates more cartons and packages A textured powder-coated coating maintains its newness Pre-drilled side and bottom mount patterns, fully assembled. It is advised to use aluminum mounting hardware (sold separately) Comparable to any Gibraltar Mailboxes post with the designation letter B Separate mailbox post available.