The Enforcer | 1/4 Inch Steel High Security Locking Mailbox

$355.00 Save 10% at checkout 0% payment options available at checkout
/
PICK YOUR MAILBOX COLOR
ADD FREE 1 3/4" Vinyl Numbers
You May Also Like:

The Enforcer — Built to Enforce Mail Security
10" x 10" x 21" @ 68 LBS.

Formerly known as the Small Standard Mailbox.

There’s nothing “standard” about this mailbox, so the old name had to go. As the original Fort Knox Mailbox that started it all over 30 years ago, it deserves a name that reflects its true purpose.

Just like The Bunker, this mailbox has earned its reputation through decades of reliable service. The new name — The Enforcer — captures what it does best: enforcing security, ensuring durability, and protecting your valuable mail exactly where it belongs.

Fort Knox Postal Delivery Guarantee

If your mailbox is installed according to USPS placement requirements and your local post office refuses to deliver mail to it, you may return it for a full refund. In 20 years, we have not had a single mailbox returned for this reason.


Built for Strength

The only difference between The Bunker and The Enforcer comes down to material:

  • The Bunker → 1/8" solid steel body and reinforced doors
  • The Enforcer1/4" solid steel body and 3/16" thick reinforced doors

When you want absolute certainty that your mail is protected, The Enforcer eliminates every doubt — it’s built to be the ultimate line of defense.



How It Works

  1. The mail carrier inserts incoming mail into the top slot (9.5” W x 1.75” H).
  2. Mail drops into the locked compartment — only you have the key.
  3. Outgoing mail option:
    • A flag and a small slot beneath the incoming slot are added.
    • Holds 1–4 envelopes (must stick out ~1 inch for carrier to retrieve).
    • Outgoing mail cannot be locked (per postal standards).

Additional details:

  • The body of the mailbox has an overhang to protect against rain and vandalism.
  • The door is secured with a 7-pin tubular pick-proof lock (upgradable).
  • Pre-drilled on the bottom (4 holes, 5 ¾” apart) to fit Small Posts, or mountable on existing posts/surfaces.
  • Finished with thick powder coating inside and out for durability.


Special Features of The Enforcer

  • 68 lbs of solid steel for mail security
  • Holds an average of 1 week of mail
  • Incoming slot: 1 ¾" x 9 ½"
  • 2" continuous welded steel hinge
  • 8" recessed slot design to:
    • Accept small packages
    • Prevent hand entry
  • All recessed doors which is very important to defend against prying
  • All hand-welded (no rivets or spot welds)
  • 7-pin tubular pick-proof lock (upgradable)
  • High-performance powder coating (inside & out)
  • Standard colors: Slate Gray or Glossy Black
  • Special colors available for an additional charge

Included with Every Enforcer

  • Free 1 ¾" vinyl adhesive address numbers for the front door
    • Request specific numbers at time of order
    • 3" side numbers available at an additional charge
  • Pre-drilled for our steel posts, racks and other surfaces.

Custom Options & Upgrades

  • Lock upgrades:
    • Slam Lock → Accept larger packages through the locked door
    • Medeco® Lock → Hardened steel security upgrade
    • Vault Lock Extreme → Maximum security with Medeco
  • Color upgrades:
  • Outgoing mail option:
    • Add 3/16" thick steel flag + outgoing slot (1–4 envelopes, non-locking)
  • Post options:
    • Matching steel post (4" x 4" x 57")
    • Surface Mount Post
    • Curb Mounted (for existing sidewalk)
    • Ground Level installation
  • Rear door access (same price, 2 options):
    • Front door replaced with welded steel plate
    • Front and rear doors keyed alike
    • Upgraded lock applied to both doors if purchased

Shipping and Lead Time

All Fort Knox Mailboxes are built in the USA and ship directly from our facility in Grants Pass, Oregon. Each unit is fabricated for maximum quality and securely packaged to handle the stress of transit.

Production Time

  • In stock: The Enforcer Mailbox ships the same or next business day.

  • Not in stock: Production may take up to 12 business days.

  • Multiple units: Contact us for current lead times.

Transit Time

  • FedEx Ground: Typically, 2–5 business days, depending on location.

  • Freight: 1–10 business days for oversized or multi-unit shipments (quote required).

Shipping Carrier

  • FedEx or UPS Ground:  For approx. 1–6 Enforcer mailboxes without steel racks.

  • Freight for 7+ units or orders including racks (often more cost-effective for larger quantities).

Tracking
Tracking information is automatically emailed as soon as your order leaves our facility in Oregon.

Need it sooner?
Rush builds are sometimes available, depending on the production schedule. Contact us before ordering to confirm the fastest ship date and current stock status.

  • 5 stars: 52 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Anonymous

Beautiful and strong and fit perfectly with my neighbor's new mailbox on our existing brick mailbox foundation. Nice touch --including a small bar of "Fort Knox" chocolate with the keys!

C
Cody B.

Shipping time took 2-3 weeks upon ordering. Reached out to customer service during this time, and were very helpful and very responsive. Packaging upon arrival was excellent. Everything was well packaged with styrofoam and plastic wrap. Onto the mailbox itself. It’s everything you see online. It’s truly the last mailbox you will buy. Don’t let the price tag deter you; It’s worth it. Heavy and very well constructed. Welds are clean and powercoat is top notch. Install was a breeze with well written instructions. High recommend for anyone wanting to take their mailbox game to the next level.

A
Anonymous

Beautiful and easy to install
Holds weeks worth of mail, no need to retrieve mail everyday

p
pauline A.

From start to finish the process was seamless!!! Great experience.

A
Anonymous

My mailman loves it.

E
Eugene W.A.

This mailbox is amazing gives you complete peace of mind never have to worry about it being broken into! Absolutely love it

M
Matthew T.C.

Happy New Year,
Attached please find some pictures of the custom installation that I performed myself. I am very happy with the results! Although in hindsight, I probably should have ordered the lighter weight 38lb. box, because I almost got a hernia lifting the 68lb. box to the top of the base that I built.
Thanks in advance for the extra keys,

B
Brian T.

Installed this April 2019. Fantastic unit. Withstands anything Mother Nature can throw at it. No more putting mail on hold while on vacation. Mail order prescriptions and small parcels are securely locked. Thank you for building a quality product. Well worth the money and sweat to put it in.

C
Caleb M.

Just wanted to say that we had an incident a few weeks ago. A driver lost control of his speeding car and hit one of our Fort Knox posts and boxes. He was doing 80-100 mph when he made contact with it. The box was ripped off the post and trapped under the car as he continued into a 16-18 telephone pole that he broke in 2 places. We had to pull the post kind of back to being plumb and beat the box back into shape so the doors would close but hey its still operational. Just wanted to let you know your stuff is tough as h**l.

V
Vivian H.

Wonderful company with great customer service. We love our Fort Knox Mailbox! Very secure mailbox.

J
Jon H.

Dear Fort Knox Mailbox Folks,

So very happy I bought your mailbox. Even though it is the basic and least expensive of your mailboxes, it is incredibly sturdy.

Worth every penny I paid for it. I am so glad that I found such a wonderful company that makes high quality products in the USA!!!

I will recommend you to everyone I know.

Thanks so much!

E
Elizabeth

This was the best purchase we have ever made. I also have a ring account. And when anybody complains about mail box's being opened, I give them a shout out about your wonderful product! Stay safe, get a Fort Knox mail box

L
Larry S.

I just wanted to share how impressed I am with my recent order! The construction of the box and stand were way beyond my expectations and the packaging was second to none! Please share with everyone that you have a very satisfied customer in Tennessee! (The candy coins were a nice touch also!)

J
Joanne G.

What I love about Fort Knox Mailboxes is that while they are a family business (which I love supporting family type businesses), they our professional, knowledgeable and all their products are made with the highest quality. Their customer service shines above the rest making sure product, shipping and delivery meet the needs of their customers. I would highly recommend them and the mailboxes are worth every penny spent!

T
Todd L.

Fort Knox Mailboxes are solid! As a mail carrier, I encounter them often. With mail theft so prevalent these days (especially in rural areas), I believe Fort Knox Mailboxes are one of the best deterrents you can buy.
Todd L.

K
Karen S.

This is a superior product. I wish I bought one when I moved in 3 years ago, but you know the ancient proverb, the best time to plant a tree was 20 years ago, the second best time is today! And so I did! No, I didn't plant a tree, lol, I bought a box. A Fort Knox Mailbox. If you buy one, you will be glad you did.

P
Peggy P.

We purchased our Fort Knox mailbox several years ago. It has been in it twice by cars and it still in good condition. Black and shiny. We feel secure leaving on vacation because our mail is now secure until we get back. We highly recommend Fort Knox mailboxes. Well worth it.

T
Todd S.

Best Mailbox by far we have ever had. Pretty much bullet proof. All of our work and home mail is always safe and secure. Great product.
Todd

R
René P.

This mailbox is terrific. It allows for mail to be put in a slot and only someone with a key can open it. The owners were the best to work with.
René

S
Scott H.

For Knox Mailbox are high quality security mailboxes that keep thieves away from your mail. And they're American made! My wife and I haven't had any problems with our mail getting stolen since we got our Fort Knox Mailbox several years ago. It's truly worth the price of the box because it saves you from becoming a victim of a crime. Go get one!
Scott

B
Bill T.

Before the installation of our Fort Knox mailbox, we had several incidents of mail theft in our area. Since switching to this heavy duty steel mailbox nearly 10 years ago, we haven't had a single issue.

This is a small, family-owned business in Oregon that clearly values quality and craftsmanship. The staff are professional, friendly and knowledgeable.

Highly recommended!

B
Bailey K.

My husband and I love our new Fort Knox Mailbox for our new house! Super secure and easily identifiable as ours (house number removed in photo for privacy reasons)! We are excited for the years of use we will get out of it!

A
Amanda R.

My family and I just recently moved back to Southern Oregon and into a home that has a Fort Knox mailbox — a black Small Standard to be exact & I was so excited! I have seen plenty of Fort Knox boxes around town & I finally have the pleasure of having my own! I am beyond thrilled that my mail is locked & secure from mail thieves. Being able to retrieve my mail with your own key really puts my mind at ease. Thank you Fort Knox for making really awesome & secure boxes! ❤️

L
Laura G.

We love our Fort Knox Mailbox! The owners are great to work with. We appreciate that our mail is secure, even when we can't pick it up for days. Great purchase, would definitely recommend.

g
gigi

My Fort Knox mailbox from 2012 survived by neighbors SUV running over it and suspending the car in mid-air until a tow truck came. If this mailbox can survive a 2 1/2 ton SUV, it can survive anything. I have since ordered a new post to replace the original CBC block structure and will be using the same Fort Knox standard 1/4" steel small mailbox on top. Before and after pics included.

K
Karen S.

This is a superior product. I wish I bought one when I moved in 3 years ago, but you know the ancient proverb, the best time to plant a tree was 20 years ago, the second best time is today! And so I did! No, I didn't plant a tree, lol, I bought a box. A Fort Knox Mailbox. If you buy one, you will be glad you did.

C
Cindy

JUST WHEN I GAVE UP HOPE OF EVERY RECEIVING ANYTHING, YOU COME THROUGH !!!
IF I LIVED ANYWHERE NEAR GRANTS PASS, OREGON, I WOULD COME OVER AND GIVE
YOU A BIG HUG.
THANKS SO VERY MUCH FOR YOUR HELP, ESPECIALLY SINCE NONE OF THIS
PROBLEM WAS A RESULT OF YOU OR YOUR COMPANY.
THANKS AGAIN FOR ALL
THE HELP AND YOU HAVE ONE GRATEFUL CUSTOMER.
BLESS YOU!
TONY V

P.S. I SINCERELY PROMISE, IF I HEAR OF ANYONE LOOKING FOR YOUR TYPE OF
MAILBOXES, THAT I WILL SEND THEM TO YOU
DIRECTLY. THANK YOU.

L
Len D.

I've had your standard (10x10x21) mailbox for more than 10 years in front of my property. No one has tried to knock the box while passing and no mail thefts. A few days ago a young man lost control of his truck and went into the ditch, taking out my mail box in the process. It sheered the bolts holding the box to the post and tipped the post slightly. The mail box did major damage to the side of his truck and ripped through the entire length of the fiberglass shell on the bed of the truck. The box and post had scratches and some of the powder coating was removed but no dents in the box or the post or other damage. I got the post out and removed the cement around the base. I'll be painting the box and post and cementing it back in the ground. Fantastic product!!!!!
Len D
Rogue River, OR

T
Tom P.

HI Janet,

Just to let you know we received the mailbox today and we can't wait to install it! Never thought I would be so excited over a mailbox! Thanks again for the prompt shipping and the amazingly high quality product. Oh! and Thank you for the gold coins! What a nice touch too.

Take Care, Merry Christmas and Happy New Year to you and all the others that made our mailbox happen!

Tom P

B
Bill B.

Thank you for my awesome mailbox. The candy gold was a nice touch. Now if only the rest of my neighborhood was smart enough. Oh well, we can't save everyone....

Bill B.