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Signature Keystone Series Mailbox and Deluxe Post Packages

(View all from Gaines Mailboxes)
SKU: WL-gpkg31BM  |  View All Keystone Mailbox and Post Packages
& Free Shipping!
List Price:
You Save:

$131.27 (20%)

Volume Discount Pricing
2 - 4$500.00
5+ $479.80
USPS Approved
Select Option

Mailbox Style with Matching Post*

Optional Mailbox Text*

Flag-Side Text (Limit to 25 Characters)

Non-Flag-Side Text (Limit to 25 Characters)

Mailbox Text Color*

Optional Address Plaque*

Optional Address Plaque Text Color*

Optional Address Plaque Text (Numbers ONLY)

Optional Newspaper Holder*

Optional Locking Insert*

Optional Post Cuff*

According to manufacturer:
Usually ships in 1 to 3 business days
Ships directly from the factory floor to ensure the quickest available delivery.

Signature Keystone Series Mailbox and Deluxe Post Packages

If you want to add a touch of charm and classic taste to your home, choosing a Gaines Signature Keystone Series Mailbox is a step in the right direction. This beautiful postal solution is durable, secure, and an elegant way to turn an everyday necessity into something much more eye-catching.

Loving your mailbox may seem like an odd thing to propose, but believe us when we say you’ll adore what the signature keystone deluxe mailbox package offers. First of all, the way it rests on the edge of your curb announces your home with a certain stately charm that elevates its curb appeal. Secondly, it includes US Mail imprinted in gorgeous script on the mailbox door. Add to that the 3 different colors, more than 10 styles, an option to add your address on both sides of the box, and an easy-to-install in-ground post, you’ll see just a few reasons why choosing one of these post mailboxes makes perfect sense.

Did we mention the distinguished Gaines manufacturing or the fact that this is a customizable mailbox and post? The authentic Gaines name promises quality with its patented design, and the ability to tailor to your mailbox to your needs and taste makes it easy to create a solution that works best for you. Choose to add the optional locking insert and newspaper holder if you desire, giving yourself even more security and delivery options. With the optional locking insert, your mail is protected and stays private. The optional newspaper holder keeps your favorite daily periodical accessible and safe from curious dogs or overzealous lawn sprinklers.

One of the other wonderful options is to order a Gaines mailbox with an address plaque. This will make it easier for visitors to find your home as well as provide you with a more beautiful way to display your address.

Shop any one of our various Gaines Mailbox options here to discover a solution that will best fulfill your needs in a style that suits your taste. This leader in postal solutions creates some of the best products around and you’re sure to be satisfied with what they offer for your home.

More About the Keystone Signature Series Mailbox and Post Package
Enhance the aesthetic curb appeal of your lovely abode with the Keystone Signature Series Mailbox and Post Package. Intricately crafted, the Keystone Series Mailbox and Post Package is constructed from rust-proof aluminum. Solid brass accent pieces, hand-polished and artistically designed, adorn this stately mailbox. Available in 6 vibrant powder-coated colors, the Keystone Signature Series Mailbox and Post Package adds a classic and timeless charm to your home. Brass flag and two keys for the stainless steel lock are included in all locking Gaines mailboxes.

Cast Aluminum Material
Keystone Signature Series Mailbox and Post Packages are constructed from durable A360 rust-proof cast aluminum. Extremely sturdy and light-weight at the same time, cast aluminum is 100% rust-resistant. It is formed by pouring aluminum into a mold of the end product. During the manufacturing process, the aluminum goes under substantial amounts of pressure, which produces an extremely dense material that can withstand the harshest of conditions.

High-Quality Finish
A five-stage, powder-coated paint process is utilized to ensure that the Keystone Signature Series Mailbox and Post Package is quality-wise consistent, durable, and possess a high-quality finish. Powder coating has ultraviolet ray (UV) inhibitors that protect the surfaces, making the finish resistant to chipping, scratching, fading, and wearing. Colors remain bright and vibrant for the longest time. The Keystone Signature Series Mailbox and Post Package is available in the following elegant finishes:

  • Almond
  • Classic Black
  • Classic White
  • Metallic Bronze
  • Metallic Charcoal
  • Forest Green

Size of the Keystone Signature Series Mailbox and Post Package
The Keystone Signature Series Mailbox and Post Package is designed to accomodate a generous bulk of mail. The mailbox is spacious enough to handle several days' worth of mail, magazines, catalogs and small packages. The overall dimensions are 89 3/4"H x 22 3/4"W x 20 1/8"D.

Post Size and Easy Installation
The post is made from sturdy cast aluminum designed to withstand the harshest of condition. It is finished to match your preferred mailbox options. The surface mount post is easily installed on any hard, flat surface. The overall post dimensions are 77 1/2"H x 22 3/4"W x 8"D.

The Keystone Signature Series Mailbox and Post Package Locking Features
The Keystone Signature Series Mailbox and Post Package is designed as a locking mailbox. The lock is constructed from 100% stainless steel. Two coded lockbox keys are included. You also have the option to go for the high security version of the mailbox. No more worries of mail and identity theft with this version.

Address Plaque Features
The Classic Address Plaque is easy to install and can be added to any Keystone Signature Series Mailbox and Post Package. The address plaque comes complete with your personalized gold, silver, or bronze vinyl numbers.

The Keystone Signature Series Mailbox Raised Lettering
The Keystone Signature Series Mailbox features uniquely scripted and raised letters that exude elegance and sophistication. Constructed from solid brass, each letter casts a soft shadow across the mailbox door which adds depth and unmistakable character. The lettering comes available in four different finishes: Polished Brass, Antique Bronze, Satin Nickel, or Verde Brass. There are also 6 vibrant colors and 24 combinations to choose from. A regular basic cleaning will keep the lettering looking new for many years.

The Keystone Signature Series Mailbox Options
A lockable insert option is available for all Keystone Series Mailboxes. No more worries of mail and identity theft! The lock and key are constructed from high grade stainless steel. If you choose this option at the time you place your mailbox order, the lockable insert will be factory installed.

The Keystone Signature Series Mailbox Customization
Distinguish your home in style by placing vinyl characters in gold, silver or bronze on one or both sides of your Keystone Series Mailbox. The lettering is made from a highly durable premium vinyl and are designed to last over 7 years. If you choose to customize at the time you place your mailbox order, the lettering will be factory installed.


  • Includes mailbox and post
  • Includes easy-to-use installation instructions
  • Includes two coded keys
  • Address plaque option available
  • Available in almond, black, white, bronze, charcoal, and green
  • Easy and durable door operation
  • Holds multiple days worth of mail and larger packages
  • Magazines will lay flat, preventing tears and creases
  • Makes a great first impression, enhancing the curb appeal of the home
  • Personalized options
  • Mailbox Dimensions: 12 1/4"H x 10 3/8"W x 20 1/8"D
  • Post Dimensions:77 1/2"H x 22 3/4"W x 8"D
  • Overall Size: 89 3/4"H x 22 3/4"W x 20 1/8"D
  • Includes Manufacturers 1-year Warranty
  • Designed and built to last a lifetime
For Your Reference:

OUR SKU is Gaines Mailboxes gpkg31

This item is also sometimes listed under the following manufacturer numbers:
WL-KDX-X-KS-X-SigBM, 19084

Dimensions & Weight
Ship Weight:
Signature Keystone Series Mailbox and Deluxe Post Packages
Mailbox Dimensions:12 1/4 in. H x 10 3/8 in. W x 20 1/8 in. D
Deluxe Post Dimensions: 77 1/2 in. H x 22 3/4 in. W x 8 in. D
Overall Deluxe Package Dimensions: 89 3/4 in. H x 22 3/4 in. W x 20 1/8 in. D
40.00 lbs
almond, black, charcoal, black, green white
Locking Mailbox
General Category:
Residential Mailbox
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Frequently Asked Questions
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Signature Keystone Series Mailbox and Deluxe Post Packages
Shipping Information:

Shipping Estimate:

Usually ships in 1 to 3 business days

Stock Status:

In Stock

Ships to:

Ship Method:

FedEx/UPS (Learn More)

Shipping Policy:

Return Policy:

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Wall Mount Mailboxes Locking Mailboxes Commercial Residential