How to Install a Locking Mailbox US Postal Service Approved

Locking Security Mailbox Extra Large Wall Mounted mailbox with slot and lock tl;dr: Adding a lock yourself may not be legal, but you can buy a USPS-approved mailbox with a lock The box will need a mail slot or similar, mailbox slot in wall Buy Barska Locking Wall Mount Mailbox featuring Protects Mail, Ballots, Slips and More, Spring-Loaded Drop Slot Door, Dimensions: x

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