Keystone Signature Series Mailboxes with Pentad Mount Post

Keystone Signature Mailboxes Pentad Mount Post
Click image to enlarge.
Retail Price:$2252.06
Our Price:$1958.31
  • Free Shipping
  • In Stock
  • Ships in about 1 to 3 business days.
  • The Gaines Keystone mailbox, shown in black with polished brass with curved braces and decorative cuffs, is one of our best selling 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
  • The Keystone Signature Series Mailboxes with Pentad Mount Post System has optional address plaques with personalization
  • Door Plaques and Flags are made of solid brass or aluminum
  • There is also an available decorative post cuff for each post
  • This mailbox is also available in single post mount system with a deluxe post or a standard post
see more details

Finishes and Accents

Swipe left or right.

Product Options

Product Details


Item Height (inches) Width (inches) Depth (inches)
Mailbox 12.25" 10.375" 20.125"
Post 77.5" 83.875" 22.75"


  • Mailbox Item Number: GMMKSSIG
  • Post Item Number: GMPPENTMNT
  • Includes: Mailboxes, Post, Post Cuffs, All Assembly Hardware
  • Manufacturer: Gaines Manufacturing
  • Shipping Weight: 138 lbs.
  • Locking: Non-locking mailbox.

Additional Images

Click image to enlarge.