The Keystone Series Mailbox
Keystone n. the wedge shaped piece at the summit of an arch.
 
Superior is proud to offer Gaines mailbox and related products. We offer their entire line of products and can ship or install directly to you quickly!

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Gaines Manufacturing is proud to manufacture the finest mailboxes in the world. The "Keystone Series" is die cast from the highest quality A-360 rust proof aluminum with optional solid brass accents. Each model is finished with a durable state of the art five step powder-coat paint process. The two distinctively different front door designs were carefully thought out to complement the architecture of almost any home.

Keystone Series® Mailboxes are built with the finest materials and display the attention to detail that Gaines Manufacturing products are known for. Designed for long-life, they will give you years of lasting beauty and stylish good looks.

Because of its functional design, the Keystone Mailbox can also be easily mounted to a 4" x 4" wood post. To install, simply align the wood post in the provided guide on the mailbox bottom and use a 3/8" wood screw to secure it to the post.

Gaines Manufacturing is proud to manufacture the finest mailboxes in the world. All of our models are constructed from aerospace grade aluminum and solid brass. Our distinctive and timeless design has been awarded with patent number D334,272 from the United States Government.
 

Pick a box, Pick a post, Pick your options
It’s that simple to get everything you want. Available in 32 different finish combinations, two different door options, and three different mounting post configurations, there’s a Keystone Series® Mailbox that will compliment the architecture and color of your home.

1.  Pick your mailbox color

WHITE
ALMOND
BRONZE
CHARCOAL
GREEN
MAROON
BLACK
ANTIQUE WHITE

2.  Pick from 2 Door Styles
(Examples of full line below)

Door Style "A"

Door Style "B"

3.  Pick from 2 Level Styles
(Examples of full line below)

Level 1: Mailbox w/contrasting door plaque finish

Level 2: Mailbox and door plaque same color

Five Plaque finishes
Polished Brass
Polished Aluminum
Verde Brass
Antique Bronze
Painted (to match mailbox)

4.  Pick your post/Options (scroll lower on page)

Click on any Mailbox below to see large picture

Keystone Accessories

Address Plaque
The stylish cast aluminum address plaque easily attaches with one screw to the curved brace on the Keystone Deluxe Post. It is available in all six colors with a choice of three different vinyl letter colors: gold, bronze and silver.

Newspaper Holder
The heavy duty, all aluminum newspaper holder is available in all six powder-coated finishes, and can be easily added to the Keystone Deluxe Post.

Lockable Insert
Add a Lockbox to any New or Existing Gaines Keystone Series Mailbox.  Simple Installation. Two Keys Included. Rust-proof powder-coated aluminum.  The Keystone Mailbox Lockable Insert installs securely in just seconds.

Step 1:
Slide Lockbox into the Mailbox.

Step 2:
Tighten screw.

Vinyl Lettering
Customize your mailbox by special ordering your address number and/or street name in one of these three different letter colors (Gold, Bronze, or Silver) on one or both sides of your mailbox.

Keystone Series Posts

Optional Posts enable you to mount your Keystone Series® Mailbox anywhere you choose. The Posts are available in either single or double-mount configurations. A number of accessories are also available for the Deluxe posts.

Keystone Double Deluxe Posts

Keystone Deluxe Posts

Keystone Standard Posts

Standard Post Installation Instructions (12.9KB PDF)
Deluxe Post Installation Instructions (28.5KB PDF)

Frequently Asked Questions

Q. How difficult are your products to install?

A. Our entire line of products come with clear, simple instructions. All mounting hardware is included as well as mounting templates for all wall mounted mailboxes and address plaques.

Q. How long will a mailbox or address plaque last?

A. All Gaines products are made from aircraft-grade aluminum, and have a rich, weather-resistant powder-coated paint finish. They will age gracefully over time and provide many years of enjoyment service.

Q. How will the solid brass accents and numbers hold up?

A. As with any brass elements, you can expect some tarnishing and aging over time. Most people appreciate the natural beauty of this process. The degree of the aging process is affected by a multiple of both environmental and artificial elements.

Q. Can the optional Keystone Newspaper Holder be mounted to a Keystone Standard Post?

A. Our Keystone Newspaper Holder is only designed to be mountable on the Keystone Deluxe Post and is not currently fabricated to universally fit the Standard post.
 

STEEL PLATE IRONBOXES

This mailbox is designed to resist all the normal types of mailbox vandalism, and will support the weight of a 15,000 pound semi truck. Weighing in at 20 pounds, this mailbox measures 9.5” x 7.5” x 20.5”.

THE BOX THAT STANDS UP TO A POUNDING!

Quality vandal-resistant, heavy gauge Iron Boxes are made from heavy duty 13 gauge steel plate.  The Iron Box has a durable powder coat paint job for a high quality, long lasting finish available in Back or White.

The Iron Box features a full length, full swing, stainless steel piano hinge door, making for years of trouble-free service. Available in white and black, this mailbox will enhance the entry to your home with its quality construction and unique design, while resisting the mischievous mayhem wrought by your local mailbox vandals.  Installs using a mounting board. Lifetime Limited Warranty*.  Also available in a Diamond Plate finish in black only, this Iron Box style offers a unique, industrial tough appearance.

The Iron Box is a tough, economical mailbox that mounts just like 95% of the mailboxes already in service, using a recessed mounting board under the base. Currently available in both smooth surface and a unique Diamond Plate design. A new design to our Classic Rural Mailbox makes this heavy gauge aluminum mailbox a rust -proof, economical choice. Extruded 1/8 inch aluminum construction with cast aluminum door and rear wall with a banded design...all at a reduced price. A new addition to this genre is the Letter Locker Rural Mailbox from the makers of the very high quality Letter Locker line.  This heavy gauge steel mailbox is available in a two door version, which has been in very high demand from customers asking us to offer such a mailbox.