Built Like a Vault—Because It Is One

Think bank-vault security—for your mail and packages. With the Vault, you can trust your deliveries are safe.

This is the smallest model in the Vault Series, but don’t let the size fool you. It’s built to the same standard as every Vault: ¼” solid steel, hand-welded seams, Incoming mail baffle, recessed doors, and zero pry points.

What Makes It Different

The Vault features a fully enclosed baffle system on top—no open mail slot, no fishing.

Every Vault comes standard with the Vault Lock Extreme:

• Two 3/8" thick internal steel locking pins
• 3-point lock mechanism (locks in three locations)
• Includes Medeco® lock with 2 keys

Built for both residential and commercial use, this is serious all-steel protection—made to last for decades.

Why Customers Love the Vault Series

• Available in four sizes
• Stores large volumes of mail and packages in one secure compartment
• No need to unlock multiple doors every day
• Perfect for travelers, snowbirds, and long-term storage needs
• Go days or weeks without checking in, worry-free

Need something unique? We also build custom sizes—contact us to get started.

✅ Meets all USPS requirements

How It Works

Simple. Secure. Built Like a Tank.

1. Carrier pulls down the handle and the baffle raises inside.
2. Mail carrier inserts mail and packages into the baffled door area and closes.
3. Mail or small packages drop into the baffle door.
4. As the door closes, items fall into the locked compartment below.
5. Only you have the key—peace of mind every day.

Key Specs

• Size: 12” W × 24” H × 23” D
• Weight: 170 lbs of solid steel
• Package Capacity: up to 3” H × 10” W × 10” D
• Custom sizing available → Call 1-800-206-8067
  • OR email custom@fortknoxmailbox.com

Mounting Options

• Pre-drilled with 4 holes (6 ¾” apart) matching our post holes
• In-Ground Large Posts (5" x 5" x 57”) for cementing down in the ground
• Surface Mount Large Posts (5" x 5" x 28") for sidewalks/pads
• Can also be encased in masonry for a built-in look

Why the Vault Stands Apart

• 170 lbs of steel for extreme theft deterrence
• ¼″ thick steel shell
• Reinforced 3/16″ steel doors
• 2″ continuous welded hinge
• Fully hand-welded (no rivets or spot welds)
• Vault Lock Extreme with Medeco® lock (included, with 2 keys)
• Brushed satin nickel pull handle
• Powder-coated inside & out for weather resistance

Style & Customization

• Standard colors: Slate Gray or Glossy Black
• Custom colors available for an additional cost.  See color chart HERE
• Free 1¾″ vinyl adhesive address numbers for the front door

Available Upgrades:

• Outgoing Mail Slot + Flag (1½″ slot inside box)
• Rear Door Access (front & rear keyed alike, or welded front option)
• 3" Side Address Numbers
• Aluminum mail tray
• Motion-activated LED light

Post Options:

• In-Ground Post (5" × 5" × 57") → cement installation
• Surface Mount Post (5" × 5" × 28") → for existing sidewalks
• Mounting choices: Curb Mount or Ground Level

In Short

The Vault isn’t just a mailbox—it’s a shield for your deliveries. Built to outlast weather, wear, and would-be thieves, it’s the last mailbox you’ll ever need.