This is Not Your Average Locking Mailbox

Before you dive into the details about the components of our mailboxes, take a look at features. Scroll over the image areas that have a light gray outline around them or select features for details on the construction of our mailboxes. Click outside of a feature to deselect it.

  • Steel Flag
  • Top Door (unlocked)
  • Address Numbers
  • Middle Lock
  • Middle Hinge
  • Bottom Lock
  • Bottom Door
  • Just under the mailbox

Watch the video on how the Fort Knox Mailboxes are made.

Our Steel

Our mailboxes are made from ¼” steel. This is industrial, or structural steel, which is used to make buildings and bridges. It’s what gives those huge construction projects their strength. It’s super thick, built to last, and the long-term solution to those thinner locking mailboxes that are made of flimsy materials. This steel is the backbone on which the rest of our security features lie.
This solid steel shell will withstand bats, rocks, sledgehammers, mailbox bombs, and vehicles!

The M1-LT is our lighter gauge mailbox, made of 1/8” steel

M1-LT
MAILBOX

Without post: 38 Lbs
With steel post: 57 Lbs

SMALL STANDARD
MAILBOX

Without post: 68 Lbs
With steel post: 110 Lbs

LARGE STANDARD
MAILBOX

Without post: 96 Lbs
With steel post: 141 Lbs

THE FORTRESS
MAILBOX

Without post: 98 Lbs
With steel post: 142 Lbs

THE VACATIONER
MAILBOX

Without post: 136 Lbs
With steel post: 181 Lbs

THE SENATOR
MAILBOX

Without post: 148 Lbs
With steel post: 193 Lbs

THE VAULT SERIES
MAILBOX

HEAVY! With matching
steel post = VERY HEAVY!

THE
PACKAGE BOX

Without post: 165 Lbs
With steel post: 193 Lbs

Our Doors

We know that the most common way of getting into a traditional locking mailbox is by prying open the door. The door of a mailbox is very important! Our doors are all recessed, which means that they’re inset to eliminate all pry points. The doors are 3/16” steel with a 2” continuous hinge. They are reinforced with an angle-iron welded to the door.

Click here to watch the video on YouTube.

fort knox mailboxes are fully welded

Our Welding

All Fort Knox Mailboxes are hand-welded, by a real person, with real attention to detail. There are no spot welds or rivets. We understand that the welds must be strong, or security is compromised. All back plates, hinges, doors, and parts are welded.

Our Mail Slots

Our incoming mail slots are 1.75” tall. They’re as narrow as possible and still meet USPS requirements for a locking mailbox. A narrow slot is vital, so that thieves can not reach down into the mailbox.

Also at the incoming mail slot is an extension of metal that goes directly back into the mailbox for 7 inches. This prevents long, skinny arms from reaching far inside. It also serves as an anti-fishing deterrent. When fishing is attempted, this shelf prevents mail from coming up and out of the mailbox.

mail slots on our mailboxes

Our Locks

A mailbox is only as strong as its lock. So, locks are of extreme importance! Our 7-pin tubular lock is included on all our mailboxes and is equivalent to a vending machine lock. We also offer a variety of upgraded locks, including hardened steel locks, vault locks, and slam locks. We offer double-locked options and simply, the highest security locks available.

Medeco lock

Medeco Cam Lock

7 pin tubular pick proof lock

7 Pin Tumbler Lock

slamlock

Slam lock

Vault lock mechanism

The Vault lock extreme

Our Flags

If you order a mailbox with a flag, the quality of steel will be the same as our mailboxes.

  • M1-LT: 1/8” Steel Flag
  • Small Standard: 3/16” Steel Flag
  • All other mailboxes: 1/4” Steel Flag
mailbox flags
post racks

Our Posts

Our posts are sold separately from our mailboxes and bolt from underneath with carriage bolts, so that no theft of the mailbox is possible. Our posts are made of 10 gauge square tubing (or 1/8” inch). In-ground posts are designed to be buried approximately 2 feet in the ground, with cement. If you’re planning to use a pre-existing post, make sure it can support the weight of your Fort Knox Mailbox!

  • M1-LT: 1/8” Steel Flag
  • Small Standard: 3/16” Steel Flag
  • All other mailboxes: 1/4” Steel Flag

Sand Blasting and Powder-Coating

After construction, all Fort Knox Mailboxes go through our rigorous sand-blasting process. All oil and debris are removed to create a clean, adherable surface.

Then, our mailboxes go into our powder-coating booth, to pre-heat to over 300 degrees. Colored powder, which is finely ground particles of pigment and resin, is then sprayed onto the mailboxes with electro-static bonding and placed back in the oven to cure at 400 degrees.

Powder-coating is superior to painting. It is an advanced finish designed to survive outside, in the elements. Powder-coating is what theme parks use on their trash cans, railings, and benches for longevity.

Sandblasting mailboxes
final inspection of our mailboxes

Final Inspection and Shipping

Each Fort Knox Mailbox is carefully inspected, by a real person, before packaging. Locks are installed, address numbers affixed, and accessories added.

We then use the very best packaging materials possible to package up these HEAVY mailboxes! It’s important that they arrive in perfect condition and over the years, we’ve perfected our packaging process. First, we wrap each mailbox in protective plastic wrap. Then we surround all sides with high density foam, double-corrugated cardboard, tape, strapping, and a lot of sticker signage!

Shipping

Mailboxes under 150 pounds will ship via UPS.

Our heavier mailboxes, or orders of multiple mailboxes ship via freight, on a pallet.

shipping a Fort Knox Mailbox
mailbox grouping

Fort Knox Mailboxes are made 100% in America, by Americans, for those who are ready for serious mail protection.

Testimonials