M1-LT Mailbox

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

We are glad to introduce the m1-lt mailbox!  It is made unlike our other mailboxes. Instead of using our extreme duty 1/4″ thick plate, this mailbox is made out of heavy-duty 1/8″ thick steel (11 gauge). It may be half as thick as our other mailboxes, but it still takes a beating. It is also thicker than any other locking mailbox available on the market. This mailbox was designed for those needing high security, but not having the ability to use our other heavier mailboxes.  Weighing in at 38 lbs., this mailbox is ready to protect your mail.  Designed just like our small standard mailbox, the m1-lt is able to hold an average of 1 week of mail.  Included are two high-security tubular keys for the 7 pin tubular lock, and free address numbers.  You ask why the name m1-lt? Some think it is because we build our mailboxes like an m1-a1 abrams tank, but really it stands for the #1 mailbox, and lt is for the “light” version!

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 mailbox is a “Limited Service” Mailbox, and is set up for incoming mail only.  If you need outgoing mail, it is an option that can be added but outgoing mail can NOT be locked.  It is important to note that the outgoing mail option when added exposes the mail for the mail carrier to see and grab.  It allows about 1-4 envelopes at a time.   If you have any questions, don’t hesitate to contact us, 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 added.  Although there is no door concealing the outgoing mail like some of our other mailbox models, outgoing mail is still available.  Note: You will need to leave your outgoing mail sticking out about an inch for the mail carrier to be able to grab. (See our cutaway view below to see an explanation of how this works).
The body of the mailbox has an overhang that will provide 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:

  • 38 Lbs. of Steel! (Mailbox only).
  • Outside dimensions 10 1/4″ Wide x 10″ High x 20″ Depth.
  • Average of 1 week of mail storage.
  • 1/8″ Thick steel shell (11 gauge).
  • 1/8″ Thick steel doors.
  • 1″ Continuous welded steel hinge.
  • All hand welded design. (No spot welds or rivets)
  • 1 3/4″ x 10″ Incoming mail slot.
    • 7 1/2″” of recessed slot design to:
      • Accept small packages.
      • Keep hands out!
  • 7 Pin Tubular lock. (upgradable)
  • High performance powder coating inside and out.
    • Standard colors (Slate Gray or Glossy Black)
    • Special colors available +$98. (We will contact you if requested.)
  • Free 1-3/4″ vinyl adhesive  address numbers for the front door.
    • Make sure to request specific numbers at time of order
    • Larger side numbers and street name available.
    • Reflective numbers and street name also available.
  • Pre-drilled for our steel posts or racks.
  • Can be custom adjusted and upgraded:
    • Any custom solid powder coating color available (+$98 per order).
      • Click HERE for online color chart.
    • Pre-drilled for our steel posts or racks.
      • Can be installed on our break-away (surface mount) posts.
      • Can be installed on or in most surfaces (Wood, metal, masonry, etc.).
      • Add a matching steel post (2.5″ x 2.5″ x 57″).
        • Surface mount (break-away)  posts available.
  • *Rear Door access available for additional cost.
  • Optional Upgradable Locks:
  • Dimensions: (10.25″ W x 10″ H x 20″ L).
Weight38 lbs
Dimensions10 × 10 × 20 in

choose option, Glossy Black, Slate Gray, Custom Color + $98 (contact us for desired color)

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    Measurements: 2 X 2 X 57 in
    Weight: 19lbs
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