Fort Knox The Fortress Mailbox

Fort Knox The Fortress Mailbox

Regular price $348.00 Sale

Matching 5′ x 5″ x 5″ steel post for Large mailboxes
Make your post a sidewalk surface mount (or breakaway).

Note: This does not include the entire post, this piece will be added on to the post you purchase to make it breakaway or surface mount application.


No shipping costs applied on in stock Items.Put this savings towards your installation with purchase of Box & Post. 


All Fort Knox mailboxes come with a high quality, pick-proof, 7-pin tumblar tubular lock. These locks have been used for over 8 years, in over 6,000 mailboxes with no problems.  There are other styles of locks offered.  One is a “Slam-Lock” for people who receive packages often.  There are high security Abloy and Medeco Locks which are a more secure lock for those who are worried about heavy tampering to their mailbox. These locks are made to take a beating!


The leader in heavy duty and high security, locking, steel mailboxes!
The Fortress is ready for battle.  With the same mail storage as the Large Standard, the Fortress is set up for outgoing mail.  Behind the upper 3/16″ thick steel door is an incoming mail slot and outgoing mail compartment.  Also includes is a 1/4″ steel flag.

Features of the Fortress Mailbox
102lbs (Mailbox only)

  • ¼” steel shell (as with all Fort Knox Mailboxes)
  • 3/16” reinforced steel doors
  • 2” Continuous welded steel hinge
  • ¼” steel powder coated red flag
  • All hand welded design (no spot welds or rivets)
  • 3” Outgoing compartment
  • 7 Tubular lock (upgradeable)
  • Brushed satin nickel pull
  • 2 Heavy duty magnets
  • High performance powder coating inside and out
  • Average of 2 weeks of mail storage
  • Pre-drilled for Fort Knox’s steel post or racks (can be installed on a breakaway post)
  • Can be custom adjusted and upgraded

Dimensions: 12”H x 12”W x 23”L


Special powder coating colors are available upon request.