Multiple Anti-Theft Protections: Don't worry about losing keys and being unable to retrieve your parcels. 17.3' x 13.8' x 22.8' mailboxes for outside come with a secure password lock and internal hinge to ensure your packages are well-protected. The deposit opening is also equipped with a large anti-theft baffle, reinforced screws, and hydraulic support poles to prevent theft and shock absorption. Highly Durable: The package delivery boxes for outside are constructed from 0.8mm thick galvanized steel, and features a specialized coating through a spray process to prevent rust and scratches. Long-lasting lifespan of up to 10 years. IPX3 Waterproof Protection: Our IPX3-rated wall-mounted mailbox offers unparalleled defense against harsh weather conditions, including typhoons, rain, and snow. The specially designed waterproof seals ensure your valuable packages remain clean and intact, no matter the elements