The M1-LT Mailbox

10″ x 10.25″ x 20″ at 38 LBS. (Mailbox Only)

The M1-LT mailbox is made of heavy-duty 1/8″ thick steel (11 gauge). Half as thick as our other mailboxes, but it can still take a beating. The M1-LT is thicker than any other locking mailbox on the market and designed for those needing a high security option without the extreme weight. The M1-LT can hold an average of one week of mail. Included are two high-security tubular keys for the 7 pin tubular lock (which is upgradable), and free address numbers. Why purchase the M1-LT? It’s strong, built like a small “tank”, and ready to defend your mail!

Matching In-Ground post for this mailbox is: LT 2.5″ x 2.5″ x 57″.
Need a Surface Mount (Break-Away) Post for a sidewalk or cement slab installation? We have both styles available, and you can add either post below.

* = Color must be selected in order to add to cart.



Lock Options

Add a Rear Door

Add Flag and Outgoing Mail Option

Add a Steel Post

Optional Accessories

Add FREE address numbers

ADD More Address Numbers

Enter Address Below if Requested


This is a “Limited Service” Mailbox, and set up for incoming mail only. If you need outgoing mail, it is an addable option, but outgoing mail cannot be locked. When added, the outgoing mail option exposes the mail for the postal carrier to take. It allows for about 1-4 envelopes at a time. Contact us with questions or view our FAQ page.

The mail-carrier inserts the incoming mail into the slot (11.5″W x 1.75″H). Outgoing mail rests below the incoming slot (with an optional outgoing mail capability). Although there is no door concealing the outgoing mail like some of our other models, outgoing mail is still available. You will need to leave your outgoing mail sticking out about an inch for the mail carrier to grab (see our cutaway view for an explanation of how this works).

The body of the mailbox has an overhang that provides protection from vandalism and rain. The door is held closed with an included 7 pin tubular pick-proof lock (upgradable) and incoming mail will rest behind this locked door after the mail-carrier drops it in the slot.

Special features for the M1-LT:

  • 1″ continuous welded steel hinge
  • All hand-welded design (no spot welds or rivets)
  • 1 3/4″ x 10″ incoming mail slot
    • 7 ½” of recessed slot design to:
      • Accept small packages
      • Keep hands out!
  • High performance powder coating inside and out
    • Standard colors (Slate Gray or Glossy Black)
    • Special colors available +$150 (we will contact you if requested)
  • Free 1-3/4″ vinyl adhesive address numbers for the front door
    • Request specific numbers at time of order
    • Larger side numbers, reflective numbers and street name available
  • Pre-drilled for our steel posts or racks
  • Can be custom adjusted and upgraded
  • Can be installed on or in most surfaces (wood, metal, masonry, etc.)
  • Add a matching steel post (2.5″ x 2.5″ x 57″)
  • *Rear Door access available for additional cost
  • Optional Upgradable Locks:
    • Slam-Lock (for locked up packages)
    • High Security Medeco and Abloy Locks
    • Setup for the “Arrow Lock“ (post office approval needed)

Weight 38 lbs
Dimensions 10 × 10 × 20 in

choose option, Glossy Black, Slate Gray, Custom Color + $150 (contact us for desired color)

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