Fort Knox Bunker

The Bunker — Rugged Mail Protection
10" x 10.25" x 20" @ 38 LBS.

Formerly known as the M1-LT Mailbox.

We originally named it after the Abrams tank because our mailboxes are truly “built like a tank!” However, most people aren’t familiar with that military vehicle, so we wanted a name that instantly communicates strength and protection.

That’s how The Bunker was born. Just as soldiers relied on bunkers in battle for safety and security, this mailbox is designed to give you peace of mind. Rugged, resilient, and ready for anything—it’s built to protect your mail like it’s under heavy guard.

How It Works

1. The mail carrier inserts incoming mail into the slot at the top (10” W x 1.75” H).

2. Mail drops into the always-locked compartment.

3. Only you have the key—your mail waits safely inside until you retrieve it.

The Bunker has four pre-drilled holes on the bottom. These holes are 4 ?” apart. They are made to fit our Bunker Posts. You can also install it on wood, metal, or masonry surfaces.

Outgoing Mail (Optional)

• This is a “Limited Service” mailbox, designed for incoming mail only.
• Outgoing mail option available (adds a 1/8" flag and slot beneath incoming slot).
• Holds 1–4 outgoing envelopes.
• Outgoing mail is not lockable and must stick out ~1 inch for carrier pickup.
• No concealment door like our larger models.

Special Features of The Bunker

• 38 lbs. of solid steel for security
• 1” continuous welded steel hinge
• All hand-welded design (no spot welds or rivets)
• Incoming slot: 1 ¾" x 10"
• 7.5" recessed slot depth to:
  • Accept small packages
  • Prevent hand entry