The Vault Series
1/4″ Steel Anti-Theft Package Mailboxes

The Vault Series
1/4″ Steel Anti-Theft Package Mailboxes

(17 customer reviews)

From: Original price was: $1,795.00.Current price is: $1,499.00.

Add a Flag and Outgoing Mail

Add a Rear Door

Steel Post for the Vault, XL & XXL Vault Mailboxes

Heavy Duty Steel T-Post for XXXL Vault Mailbox

Built Like a Vault—Because It Is One

The Vault Series is the ultimate in mail and package security. Made from ¼” steel, with hand-welded seams, recessed doors, and zero pry points, these units are designed to withstand the toughest conditions. What sets them apart? The fully enclosed baffle system up top means no mail slot, no fishing. Each Vault comes standard with our Vault Lock: two internal steel locking pins and a front lock for double-locking protection with the free lock upgrade the Vault Lock Extreme with Medeco Lock.

These are serious, all-steel solutions for both residential and commercial use, built to guard your mail and packages for decades.

Why Customers Love the Vault

With four available sizes, the Vault is a favorite for travelers, snowbirds, and anyone tired of mailbox compromises. It holds large volumes of mail and packages in one secure compartment—no need to open a separate lock every day. Go days or even weeks without checking in, and know your items are safe.

Need a custom size? We build those too. Contact us to start the conversation.

Meets all USPS Requirements

See Our Popular Accessories for This Mailbox!

Description

This is How It Works!

The mail carrier will pull down on the handle, place your mail and packages inside the baffle door. As the mail carrier closes the door, the mail and packages fall into the locked compartment. You are the only one with a key!

There are 4 different sizes of Vaults available:

  • Vault (12” W x 24” H x 23” D ; 170 lbs) – $1,499
    • Accepts a 3” tall package
  • Vault XL (12” W x 36” H x 24” D ; 225 lbs) – $1,899
    • Accepts a 6” tall package
  • Vault XXL (18” W x 36” H x 24” D ; 325 lbs) – $2,199
    • Accepts a 6” tall package
  • Vault XXXL (24” W x 36” H x 24 D : 400 lbs) – $2,499
    • Accepts a 6” tall package

Custom sizing is also available. Please call 1-800-206-8067 or message us to discuss.

Mounting

The Vault is pre-drilled on the bottom.

  • Vault, Vault XL and Vault XXL all have 4 holes, 6 ¾” apart, and designed to fit our Large Posts. The height of these posts is custom cut to accommodate the taller heights of the Vault Mailboxes:
    • Vault Mailbox: 57” In Ground Post
    • Vault XL and Vault XXL: 50” In Ground Post
    • Vault XXXL: 50” In Ground T-Post
  • The Vault XXXL has 8 holes and is designed to fit our Large T-Post. This T-Post is needed to accommodate the weight of the Vault XXXL.
  • Surface Mount Posts are also available.

The Vault comes with our amazing, high-performance powder-coating finish to combat all the elements.

Special Features for the Vault Series Mailbox:

  • 170-400 lbs. of steel! (Vaults Only)
  • 1/4″ thick steel shell
  • 3/16″ thick reinforced steel doors
  • 2″ continuous welded steel hinge
  • All hand-welded design (no spot welds or rivets)
  • Vault Lock EXTREME with Medeco Lock and 2 keys ($99 value INCLUDED!)
  • Brushed satin nickel pull
  • High performance powder coating inside and out
    • Standard Colors (Slate Gray or Glossy Black)
    • Any custom solid powder coating color available (+$169 per order)
  • Free 1-3/4″ vinyl adhesive address numbers for the front door
  • Pre-drilled for mounting on our steel posts or racks
    • Can be installed on a break-away (surface mount) post, on most surfaces with pre-drilled holes, or encased in masonry
    • Add a matching in-ground steel post (5″ x 5″ x 50″)
      • For the Vault, Vault XL and Vault XXL
    • Add a matching in-ground steel  T-post (5″ x 5″ x 50″)
      • For the Vault XXXL
    • Surface mount (break-away) posts available
  • The Vault can accept packages 3″ H x 10″ W x 10″ D
  • The Vault XL can accept packages 6″ H x 10″ W x 10″D
  • The Vault XXL can accept packages 6″ H x 16″ W x 10″ D
  • The Vault XXXL can accept packages 6″ H x 22″ W x 10″ D
  • Can be custom adjusted and upgraded:
    • Add the flag and outgoing section
      • When the outgoing section is added, a small 1 1/4″ slot is added at the top inside of the box
  • Curb Mounted (for installation on an existing sidewalk)
  • Ground Level (for installing at ground level)
  • *Rear Door access available for an additional cost (3 options, same price)
    • Front and rear doors keyed alike
      • The front and rear doors would have the Vault Lock Extreme with Medeco Lock and 4 keys
    • Front fake door and fake lock. The door is welded shut on the inside
    • No front door. It is replaced with a steel plate completely welded
the vault cutaway
Additional information
POWDER COATING COLOR *

Glossy Black

,

Slate Gray

,

Custom Color + $169 (contact us for desired color)

Vault Size *

Vault Mailbox (12" W X 24" H X 23" D) -$1,499

,

Vault Mailbox XL (12" W X 36" H X 24" D) – $1,899

,

Vault Mailbox XXL (18" W X 36" H X 24" D) – $2,199

,

Vault Mailbox XXXL (24" W X 36" H X 24" D) – $2,499

Weight 170 lbs
Dimensions 23 × 24 × 12 in
POWDER COATING COLOR *

Glossy Black

,

Slate Gray

,

Custom Color + $169 (contact us for desired color)

Vault Size *

Vault Mailbox (12" W X 24" H X 23" D) – $1,499

,

Vault Mailbox XL (12" W X 36" H X 24" D) – $1,899

,

Vault Mailbox XXL (18" W X 36" H X 24" D) – $2,199

,

Vault Mailbox XXXL (24" W X 36" H X 24" D) – $2,499

Steel Post for the Vault, XL & XXL Vault Mailboxes

Weight 50 lbs
Dimensions 57 × 5 × 5 in
Size

In-Ground Post (Dirt Install)

,

Make Post Surface Mount (Sidewalk Install)

For which Mailbox

For the Vault

,

For the Vault XL

,

For the Vault XXL

Heavy Duty Steel T-Post for XXXL Vault Mailbox

Weight 55 lbs
Dimensions 59.5 × 11.5 × 23.5 in
Reviews (17)

17 reviews for The Vault Series
1/4″ Steel Anti-Theft Package Mailboxes

  1. Mike P.

    The mailbox finally arrived yesterday afternoon. We will be installing it today. Thanks for all your help. We are pleased with how strongly it is built and should last us for many years.

  2. Laura and Darryl G.

    Thanks for the mailbox! We are relieved that our mail will be safe. We appreciate the quality made box and the professional install.

  3. Kendra S.

    Received the mailbox yesterday and looks great!

    Thanks so much for all your help!!

    Can’t wait to set it up and start using it

  4. Tom W

    I had second thoughts spending 2.5K on a mailbox for the office but wow…… even the contractors were impressed with the quality. Using it already and no complaints.

  5. Raymond N

    I have the VaultXXXL even though it is 8 years old – still looks new, solid and rust free. Great for mail and small packages – keeps the deliveries secure.

    After sale customer service is great, Andrea able to help me with additional keys.

  6. John G

    MAIL MAN DOES NOT NEED A KEY…. when first heard of a locking mailbox, I thought that the mailman needed a key and that could be complicated. But the mailman does NOT need a key. He just pushes the mail through the slot at the top of the box and it drops down into the locked section, and you can just use YOUR key to get your mail out when ready. Great for going on longer trips and all your mail is there waiting for you.
    John

  7. Carl P

    This mailbox is INSANE!!! Forget worrying about your mail, if some kid was so stupid to hit this with a bat, he would get vibration / shakes just like the cartoons do…

  8. Daniel F.

    Dear Sirs:

    I bought the Fort Knox mailbox several years ago, but its strength hadn’t been “tested out” until last year. A couple of stupid guys stole a Toyota pickup and were driving too fast on my country road. They ran off the road and slammed into my Fort Knox mailbox. It got tangled up under the truck and tore off the rear axel. It bounced free and ended up 100 yards down the road. The mailbox survived and I put it back into the ground. It’s a little beat up but still works perfectly. The thieves escaped into the woods but the pickup was a total loss.

    That steel construction is solid! What a great investment!

    Daniel F.
    France Special Tool

  9. Robert H.

    Got my mail box today, the quality is awesome your advertisement is totally truthful!! Thanks a million, Fort Knox all the way bad guy’s with hoodies can go somewhere else to steal U.S. mail!!
    – Robert H.

  10. Bob

    Received the shipment today, complete and in good shape. Amazed at the quality.
    Thanks.
    Bob

  11. Thomas

    I love my mailbox that we got last year. Everyone around me has gotten theirs broken into. At least 15 folks! But no one has even touched mine. I recommended you guys to my neighbors. I am so confident and happy. There is nothing worse than having some one steal your mail and open new credit cards with that info . May God bless you for inventing this series of mailboxes!!!!
    – Thomas

  12. Rhonda B

    Just wanted to let you know the mailbox arrived today and it looks wonderful!!!

    Thank you.

    Rhonda B., MMC
    City Clerk/Records Manager
    City of Ojai

  13. Damon

    Some one hit our mailbox with a house… Literally.
    They were towing a house on a flatbed wider than the street and drug the side of the house down the mailbox… I heard loud metal scraping from my bed room. Turns out the mailbox is fine aside for some paint scrapes and the concrete base wiggles a little in the ground.
    Figured yall would be interested in the news
    do yall have touch up paint?
    – Damon

  14. Patti

    Got it-it’s perfect! Thank you. Patti

  15. Tracey P.

    I’ve been meaning to reply to you that I received the mailbox. An amusing thing happened with the shipping company. They failed to call me before the delivery date so that I could arrange to be home to sign for it. I got a call when the delivery person was standing at my house. Of course, I was at work at the time, 45 minutes away. With a few calls to the main office, it was agreed that I could email the shipping company to give permission for the delivery person to leave it without a signature.

    But I was worried that it might get stolen. Packages get stolen off of people’s porches all the time. I left work to get home early to make sure the delivery was in a safe location. I needn’t have worried. I couldn’t even move it, let alone get it off the property!

    The guy I hired to install it said “That thing is a TANK! Someone will need explosives in order to steal your mail.”

    Thanks so much. Having my mailbox secured gives me peace of mind.

    Tracey P.

  16. Bob H

    Got our mail box today everything looks great.
    Thanks for a great built product.
    Bob H

  17. Raymond

    I have the VaultXXXL even though it is 8 years old – still looks new, solid and rust free. Great for mail and small packages – keeps the deliveries secure.

    After sale customer service is great, Andrea able to help me with additional keys.

    Raymond N

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FAQ
Shipping Options

When Will Your Mailbox Ship?

We have a lot of different models and options, so our inventory is always fluctuating.  We are currently very busy, and below are our average wait times.  If your mailbox is in stock, it will ship the same or next business day. Otherwise, here are our average wait times if not in stock*:

  • 10" Mailboxes (M1-LT & Small Standard): 1 week
  • 12" Mailboxes (Large Standard and Fortress): 1-2 weeks
  • 18" Mailboxes (Vacationer & Senator): 2-3 weeks
  • The Package Box, Vaults & CBUs: 2-4 weeks
  • Ballot Boxes: 4 weeks
  • Smaller accessories if shipping separate will ship the same or next business day
  • Custom work and custom Colors will add 1 week to the above time frames
  • Extra keys can take 10-12 days for delivery
  • FedEx Ground transportation: 1-5 Business Days
  • Freight transportation: 1-9 Business Days

*Larger quantities or custom orders will take longer.  Feel free to contact us with a more precise shipping date. 

All Products Ship USPS, FedEx or by Freight.

Fort Knox Mailbox, LLC. will choose the shipping method in which all items are shipped.  Specified shipping by the customer can add an additional shipping cost.

All keys will ship via USPS priority.  Expedited shipping is an option for an additional fee.

Our single mailboxes, except for the Package Box, Vaults and our CBUs ship FedEx Ground.

If you order a quantity of 4 or more larger items (Mailboxes and Posts), your order will likely ship via Freight.  If you would like a freight quote, please contact us HERE with all the following information:

  • Your delivery zip code:
  • Is the delivery location going to a business OR to a residence:
  • Do you have access to a forklift or a loading dock? (Not required, but reduces shipping rate):

For freight shipments, if shipping to a business and/or have access to a forklift or loading dock, you can select this option for a reduced amount on freight.  If selected, and shipping is not to a business or you do not have a forklift or loading dock, then Fort Knox Mailbox, LLC. can charge for the misinformation after delivery.  Please make sure that all delivery information is correct.

Large Items & Larger Quantities Ship Freight

Please call us at (800)206-8067 or contact us here for all your shipping questions.

Order quantities of 4 or more mailboxes can ship freight depending on location and accessorials needed.

The T-Post for 3 generally ships either FedEx Ground or Freight. We will make the T-Post for 3 in two pieces (Not all welded together) and ship it FedEx ground to be securely bolted together at installation.

Locks & Keys ship USPS

All locks and keys ship via USPS when ordered separately from a mailbox.  Expedited shipping is available for an additional cost.  Please Contact US for details and pricing.