The standard rear-loading Guardian system is an economical and secure alternative to standard aluminum mailboxes. Each door of this 6-door system is designed with a new bent cam to prevent the doors from being pried open. The durable and secure mailbox housing is made of 24-gauge durable galvanneal steel.

These lockable, high-security standard Guardian 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. The Guardian is ideal for universities, military installations, and any place needing a private mail system.