Matching Steel T-Post

If you need to mount 2 or 3 Fort Knox mailboxes on one post, our T-Posts do that — no need to install individual posts or dig extra holes. Additionally, the mailboxes don’t have to be the same. However, if you move up to 4 or more mailboxes, then steel racks are required, meaning there would be two support posts instead of the one with the T-Post. All of our posts are made using the same material thickness and completely welded to support our heavy duty mailboxes.

Fort Knox Mailboxes can be mounted to almost any type of post that is made out of most structural materials. Our mailboxes come with four holes drilled in the bottom of the mailbox for easy mounting to multiple surfaces. We recommend that whatever you are mounting a Fort Knox Mailbox to, is substantial and can handle the weight of the mailbox. You also want it mounted in a way that keeps the mailbox from being stolen. If what you have is not going to support your new mailbox, then we have a matching 57″ long steel post for quick and easy installation. It installs like a fence post in the ground, and needs to be approximately 2 feet down in the ground and cemented in. We suggest one or two bags of cement. If you need a post to be surface mounted to a sidewalk or cement slab, we also have surface mount posts (Breakaway).

T-Post Accessory:

Welded Paperbox = $130 ea.
Detachable Paperbox = $140 ea.




Post Style

Number of Mailboxes

Add a Newspaper Box


  • 5″ x 2.5″ x 57″ for the M1-LT Mailboxes
  • 4″ x 4″ x 57″ for the Small Standard Mailboxes
  • 5″ x 5″ x 57″ for the Large Standard, Fortress, Vacationer & Senator Mailboxes
  • If you have a preexisting post, make sure it can support our mailbox weight!

The post comes separate from the mailbox and is bolted from underneath with carriage bolts. This is ideal if you move and want to take the mailbox with you instead of pulling the steel post out of the concrete. Posts are made of 10 gauge square tubing (10 gauge = 1/8″). The posts are buried in approximately 2 feet of concrete.


Glossy Black, Slate Gray, Custom Color – Cost added to mailbox