Lowest Prices on Mailboxes, Period.

Keystone Mailbox

  • The Gaines Keystone mailbox, shown in metallic bronze with polished brass, is one of our best selling decorative mailboxes
  • This decorative mailbox is virtually maintenance free since it is made of cast aluminum and covered with a powder coat paint finish so it will never rust
  • The powder coat is available in several color options and complimented by several different accents to allow you to find a unique mailbox that will be a perfect match for your home
  • Door Plaques and Flags are made of solid brass or aluminum
  • Verde Brass is a durable weathered bronze antique verde patina finish
  • You can further customize your mailbox by adding your street name and address to the side of the mailbox in a 7 year guaranteed vinyl that will match the color of the mailbox's accents
  • This mailbox is available as a locking mailbox or get the locking insert to add to your keystone mailbox
  • This mailbox is also available in post mount system with a deluxe post or a standard post
  • Need an address plaque for your house? Check out our selection of Gaines HouseMark address plaques which come in combinations to match your Keystone mailbox
  • Looking for a replacement post for your mailbox? Check out our replacement mailbox posts
  • View more Decorative Post Mount Mailboxes
Available Finishes And Accents
 
Keystone Mailboxes Metallic Bronze Antique Bronze
Metallic Bronze with
Antique Bronze
gmmks20a-mbz
Keystone Mailboxes Metallic Bronze Polished Brass
Metallic Bronze with
Polished Brass
gmmks4a-mbb
Keystone Mailboxes Metallic Bronze Satin Nickel
Metallic Bronze with
Satin Nickel
gmmks24a-mbs
Keystone Original Mailboxes Black Antique Bronze
Black with
Antique Bronze
gmmks21a-blz
Keystone Original Mailboxes Black Polished Brass
Black with
Polished Brass
gmmks7a-blb
Keystone Original Mailboxes Black Satin Nickel
Black with
Satin Nickel
gmmks25a-bls
Keystone Original Mailboxes All Black
Black with
Black
gmmks19a-bl
Keystone Original Mailboxes White Antique Bronze
White with
Antique Bronze
gmmks22a-whz
Keystone Original Mailboxes White Polished Brass
White with
Polished Brass
gmmks1a-whb
Keystone Original Mailboxes White Satin Nickel
White with
Satin Nickel
gmmks23a-whs
Keystone Original Mailboxes All White
White with
White
gmmks15a-wh
Keystone Original Mailboxes Almond Antique Bronze
Almond with
Antique Bronze
gmmks26a-amz
Keystone Original Mailboxes Almond Polished Brass
Almond with
Polished Brass
gmmks3a-amb
Locking Insert
 
Gaines Keystone Original Mailboxes Locking Insert
 
Bottom View - Mounting Holes
 
Keystone Mailboxes Bottom View Mounting Holes
 
Optional Mailbox Posts
 
Gaines Keystone Original Mailboxes Standard Post
Standard Post
Gaines Keystone Original Mailboxes Deluxe Post
Deluxe Post
Order Your Mailbox
Our Low Price: $255.00FREE SHIPPING
Availability: In Stock Ships In 1 Day
Quantity
Finish and Accents
Keystone Mailboxes Finish Options More Info
Post
Gaines Keystone Post Options More Info
Side Address
Side Address For Mailboxes More Info
Locking Option
Gaines Keystone Locking Option More Info
Mailbox Details
Item Number:
  • GMMKS
Includes:
  • Mailbox
Size:
  • 12-1/4"H x 10-3/8"W x 20-1/8"D
Weight:
  • 18 lbs.
Manufacturer:
  • Gaines Manufacturing
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