LetterLocker Super Size Letter Locker Locking Mailbox

Seattle Luxe is an authorized LetterLocker dealer.

Product #8722

Made in USA

List Price $525.00 - 2705.00
Price   $425.00 - 2220.00
No Sales Tax!  Except CA and WA.

  • Components in stock.
    Custom made for you and usually shipped in 10 days.
  • Include In-Ground Post. Add $132.50
  • Include 16" Surface-Mount Post. Add $132.50
  • Include Stainless Steel In-Ground Post. Add $367.00
  • Include 16" Stainless SteelSurface-Mount Post. Add $367.00


Free 2-Year Luxe Pro Extended Warranty with Mailboxes Purchased at Seattle Luxe.



Use Promo Code SPEEDY for free shipping on all items $125 and over.  Valid ground for shipping to 48 Contiguous United States only.
  • Conditional LIFETIME Warranty.
  • Enormous capacity - 24" High x 12-1/16" Wide x 22" Deep (mailbox only dimensions).
  • One-piece seamless roll-cage type frame.
  • Rear access models available.
  • Accepts large envelopes and small packages.
  • 14 and 16 gauge electro-galvanized steel or optionally, Series 300 Stainless Steel - 90 lbs.
  • 10 gauge electro-balvanized steel is an option - 135 lbs.
  • Laser-cut 14 gauge Stainless Steel Flag
  • 4 1/2" x 10-1/2" Incoming mail slot and 2" x 10" x 6" deepoutgoing mail tray, hidden behing the top front access door.
  • Locked lower mail-retrieval door.
  • Dust-protected Auth-Florence "F" Series Lock on mail retrieval door, with 2 keys supplied. Medico deadbolt is optional.
  • Five powder coat steel colors available, also available in all stainless steel.
Post Selection

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How it Works

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Super Letter Locker, Shown in White
Click to Enlarge

Super Letter Locker, Shown in White

The Super Size Letter Locker Locking Mailbox is larger than the Letter Locker Standard yet smaller than the Supreme. It has the same unique security features not found on other mailboxes - providing extra protection. It's made from heavy-gauge powder-coated Steel with a total weight of 58 lbs.

Options include extra-heavy duty 10 ga. Steel models at weighing in at 80 lbs., dual access including rear door, and all-Stainless-Steel models. Locking options include a Medeco lock and/or the unique LetterLocker CLAW mechanism, which makes your LetterLocker virtually impenetrable.

Letter Locker's Patented Claw Locking Mechanism
Demo shown on Standard size Letter Locker
The mechanism is identical on the Supreme.


Letter Locker Color Choices

The LetterLocker standard Cam Lock is made of 3/16" steel. In this interior view, it's shown engaging the LetterLocker Mailbox door - very difficult to even get to, much less pry open.

Open Mailbox, showing Claw with Medeco Deadbolt.
Choices include the standard Cam Lock which is strong enough for most situations. Upgrades include The Claw, or The Claw plus Medeco Deadbolt



Interior view of the locked Claw. Notice the five locking points (red) two of which are at each edge of the door. With the combined strength of the door and The Claw, prying your mailbox open with a crowbar is a virtual impossibility.


Letter Locker's line of mailboxes and other custom products are proudly manufactured right here in the United States of America. Manufacturing takes place in their 17,000 square foot, state-of-the-art facility located in the Southern California High Desert town of Apple Valley.

The Letter Locker design was patented in 1994 and approved by the U.S. Postal Service pursuant to USPS Standard 7, Mailboxes, City and Rural Curbside. Due to the Letter Locker's exceptional design, it is no coincidence that the published USPS specifications for locking mailboxes uncannily resembles the Letter Locker.

Manufacturing the Letter Locker locally in the USA enables us to maintain a large volume of inventory while providing you with the option to customize your product. If you need an unusual size, specific shape, color or design, their fabricators will build it.

Most Letter Locker products ship within 3-5 business days, some custom and commercial items can take up to 3 or 4 weeks to ship. Orders under 75 lbs generally ship via UPS from Apple Valley, CA. Larger orders crated or on a pallet via common carrier. Time in transit generally takes between 5-7 business days, but depends on the destination. Your total delivery time to receive your order is the lead time + transit time.

Product lead time is subject to item availability. With 99% certainty, if an item is back-ordered, that will be indicated below the price list and add to cart button. If an item you order is on back-order and is not noted on the product page, we sincerely apologize, but will do our best to notify you promptly.

To request tracking information for an order already placed, please enter order information on our Order Status Page.

Manufacturer's Warranty:
Letter Locker products are warranted to be free from defects in material and workmanship. All products carry a limited lifetime warranty.

The warranty does not cover damages resulting from an accident after purchase, misuse, abuse, lack of reasonable care, or loss of parts.

Should your experience a product defect covered under the expressed warranty period, please contact our customer service department for prompt resolution.

Returns & Exchanges

We understand that ordering online is different than purchasing a product in a store. Online, you are unable to touch, feel, and see the item "live and in person". Should you wish to return or exchange an item, simply contact us within 30 days of receipt. We will provide return instructions to ensure a prompt and accurate refund is issued.

Items must be returned in new, unused, and resalable condition with all original packaging intact. All returned items will be inspected prior to issuing credit. Original shipping costs will be deducted from refund amount for all returns with the exception of items received defective or damaged. Original shipping costs may be waived if exchanging for another item of same or greater value. Customized orders cannot be returned due to their uniqueness.

Items offered with free shipping have the cost of shipping built into the price you pay. In the event of a return, we reserve the right to deduct the actual original shipping cost from the amount refunded to you. Free shipping applies only to merchandise shipped within the 48 contiguous United States.

If your item arrives damaged, please contact us within 5 business days of receipt of your order to ensure refund or exchange. We do not guarantee refund or exchange after 5 business days for items that may have been damaged in shipping, due to requirements set forth by our shipping carriers.