The Vault XL - Extra Large 1/4 Inch Steel High Security Parcel Locker
The Vault XL — Built Like a Vault — Now with More Room
12" x 36" x 24" @ 225 LBS.
Think bank-vault security—for your mail and packages. With the Vault XL, you can trust your deliveries are protected
The Vault XL is 12″ taller than the standard Vault, giving you expanded capacity while maintaining the same uncompromising construction: ¼” solid steel, hand-welded seams, incoming mail baffle, recessed doors, and zero pry points.
It’s the extra space you need, backed by the same legendary Fort Knox protection.
Built for Maximum Security
- Size: 12” W × 36” H × 24” D
- Weight: 225 lbs of steel muscle
- Package Capacity: Fits boxes up to 6” tall, 10” wide, 10” deep
- ¼″ thick steel body
- 3/16″ reinforced steel doors
- Seamless hand-welded construction (no rivets, no weak points)
- Oversized 2″ continuous welded steel hinge
- Upgraded Lock to Vault Lock EXTREME with Medeco® lock + 2 keys
- Brushed satin nickel pull handle
- Weather-proof powder coating inside & out
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Custom Sizes Available: Call 1-800-206-8067
- OR email us custom@fortknoxmailbox.com
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.
- Carrier pulls down the handle and the baffle raises inside.
- Mail carrier inserts mail and packages into the baffled door area.
- As the door closes, items fall into the locked compartment below.
- Only you have the key—peace of mind every day.
- Add the 1/4" thick flag for outgoing mail. Outgoing mail stored inside the mailbox at the top with a 1 1/2" tall section for mailing many sizes of envelopes.
Mounting Made Simple
The Vault XL is ready to install with pre-drilled holes:
- 4 holes, 6 ¾” apart on the bottom
- In-Ground Post (5" x 5" x 50”) for XL and XXL Vaults
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Surface Mount Posts (5" x 5" x 18")
- Available for sidewalks, driveways, or other hard surfaces
- Can also be set into masonry for a permanent, built-in look
Style & Options
- Standard colors: Slate Gray or Glossy Black
- Upgrade: any custom solid powder coat color (See color chart HERE)
- Free 1¾″ adhesive address numbers included
- 3" Side numbers available
Extra Upgrades Available
- Outgoing Mail Slot + Flag (1¼″ slot added inside)
- Rear Door Access (front + rear doors keyed alike or welded/sealed front)
- Mounting Choices: In-ground, or surface-mount (breakaway) post options
- Aluminum Mail Tray
- Motion Activated LED Light
In short: The Vault XL is designed for bigger deliveries and maximum peace of mind. With 225 pounds of solid steel and a lock system trusted by security pros, it’s not just a mailbox—it’s a stronghold on your curb.
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
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In stock: Ships same or next business day
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Not in stock: Up to 21 business days
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Multiple units: Contact us for current lead times
Freight Delivery
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Freight Only: 1–10 business days depending on location
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Fully insured: All freight shipments are covered against damage
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Palletized packaging: Units are custom shipped and secured to a pallet for maximum protection
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Appointment delivery: Carrier schedules a delivery window with you if requested
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Liftgate available: Add a liftgate service for residential or no-dock deliveries
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.