The 10-door standard rear-loading Guardian system is a secure and economical alternative to standard aluminum mailboxes. Each individual door is designed with a new bent cam that prevents the doors from being pried open. The secure mailbox housing is constructed of 24-gauge durable galvanneal steel.

Standard high-security Guardian mailbox systems are designed to be stacked two units high, mounted side by side, or between standard wall studs. All units have identical outside dimensions, allowing you to mix & match different door sizes. These locking Guardian units are ideal for universities, military installations, and anyplace needing a private mail system.