M1-LT – Lighter Weight High Security Mailbox

Name: M1-LT - Lightweight High Security Mailbox for Your Home | Fort Knox Mailbox
Brand: Fort Knox Mailbox
SKU: 784300871927
Availability: InStock
Rating: 5.00 (3 reviews)

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M1-LT – Lighter Weight High Security Mailbox

Rated 5.00 out of 5 based on 3 customer ratings

(3 customer reviews)

From: $290.00

Need Something Lighter, But Still Secure?

This mailbox has AMAZING security features, without the extreme weight of our other mailboxes. Made of 1/8” thick steel (11 gauge), it’s got all the same security features as our heavier mailboxes, but only weighs 38 pounds. It’s still thicker than other locking mailboxes on the market, with the Fort Knox recessed doors to prevent prying! It has a 1” continuous welded steel hinge. The M1-LT holds approximately 1-1.5 weeks of mail.

Are You on a Budget?

We understand that. This is WHY the M1-LT Mailbox was added to our collection. If you are tired of replacing standard hardware store locking mailboxes, and are ready for Ft Knox security, then the M1-LT can be a great fit! It’s our “entry-level” mailbox, but there’s nothing “average” or “basic” about the M1-LT! We’ve been selling this mailbox for approximately 9 years now, with FANTASTIC results.

This is How It Works!

The mail carrier inserts your incoming mail into the open slot at the top (10” W x 1.75”H). It drops down into the locked compartment. This compartment is always locked, and you’ll be the only one with a key! Your mail will be waiting inside until you’re ready to get it out. No stressing or worrying about getting there quickly!

The M1-LT is pre-drilled on the bottom. 4 holes, 4 5/8” apart, and designed to fit our LT Posts. However, it can also easily be installed on many surfaces: wood, metal, masonry, etc.

The M1-LT has our amazing, thick powder-coating finish to combat all the elements.

Available Upgrades & Accessories

In Ground Posts or Surface Mount Posts (both 2.5” square) are available
The M1-LT will come with our 7-pin tubular lock, but you can also upgrade to any of the following:
- Slam-Lock (for locked up packages)
- High Security Medeco
- The Vault Lock EXTREME!
- Setup for the “Arrow Lock” (post office approval needed)
Flag. When you add the flag, you’ll receive an extra welded shelf to the top of the door. Outgoing mail is placed on that shelf, and needs to stick out an inch, for the mail carrier to grab. Remember, outgoing mail cannot be locked by postal standards.
LED light
Small Mail Tray
Rear Door is available on the M1-LT!
Free address numbers, or upgradable side numbers
Custom Color is available on the M1-LT

Powder Coating Color * *

Clear

Lock Options

Add a Rear Door

Add Flag and Outgoing Mail Option

Optional Accessories

WIRELESS LED MAGNETIC MOTION LIGHT (+$20.00)

SMALL SLIDE OUT ALUMINUM MAIL TRAY (+$45.00)

Add FREE address numbers

Add Side Address Numbers

Enter Address Below if Requested

Add "The M1-LT Steel Post" for $120.00 – $150.00

Add to wishlist

Categories: All Products, Heavy Duty Locking Mailboxes Tags: Heavy Duty Locking Mailboxes, M1-LT

Description

More Information On M1-LT Mailbox And How It Works

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 protects it 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 the time of order
- Larger side numbers, reflective numbers, and street names are available
Pre-drilled for our steel posts or racks
Can be custom adjusted and upgraded
- Any custom solid powder coating color available (+$150 per order)
- Online Color Chart
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 an additional cost

Additional information

Powder Coating Color *	Glossy Black , Slate Gray , Custom Color +$150 (contact us for desired color)

Weight	38 lbs
Dimensions	20 × 10 × 10.25 in
Powder Coating Color *	Glossy Black , Slate Gray , Custom Color +$150 (contact us for desired color)

Weight	20 lbs
Dimensions	57 × 2.5 × 2.5 in

Reviews (3)

3 reviews for M1-LT – Lighter Weight High Security Mailbox

Ernie & Liz (Washington State) – March 6, 2025

Rated 5 out of 5
To the fine folks at Fortknoxmailbox, we received our M1-LT today and wow, just wow. It is a thing of beauty. Tough, sturdy. sleek and good to look at. We are so excited to have secure mail once again! Thank you so much for the high quality product. We will be sure to recommend your company and products to our friends. Thanks again!
Jennifer P. – April 3, 2025

Rated 5 out of 5
I (for my company) purchased one of your mailboxes 9 years ago due to it constantly being broken into, once a week at least … it took 9 years of thieves attempting to pry it open before they decided to just take the whole thing! It’s a testament to your product that they had to resort to taking it (we did have it attached to a base we thought was heavy enough) – but we didn’t have the post before! I am confident that we’ll get that long or longer this time around since we’re putting it in the ground properly. I came right back to you guys for the replacement, thank you for your great mailboxes!
Randy – April 8, 2025

Rated 5 out of 5
Hello,
Could tell the quality was high simply when unpackaging the items. Your attention to detail to get it here unscratched and quality packaging was tops.
Really Happy with the mailbox and custom address post also.

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FAQ

Shipping Options

When Will Your Mailbox Ship?

Because of custom options, we don't keep a huge inventory of mailboxes. If your mailbox is in stock, it will ship within a few days. Otherwise, here are our average shipping times*:

Smaller Mailboxes (M1-LT, Small & Large): 1-2 weeks
Larger Mailboxes (Fortress, Vacationer, Senator & Package box): 2-3 weeks
The Vaults & CBUs: 4-6 weeks
Smaller accessories ship within 2-3 days
Custom Colors will add 1 week to the above time frames
Extra keys can take 7-10 days for delivery

*Larger quantities or custom orders will take longer.

Most Products Ship FedEx

Our mailboxes except for the Package Box & Vaults, and accessories ship FedEx.

If you order a quantity of 4 or more larger items (Mailboxes and Posts), your order will ship FedEx.

Shipping for FedEx can be calculated at checkout. If the total weight of your order is higher than what FedEx allows, the freight option will appear. If that happens, we will call and finalize the cost for freight shipping once your order has been placed.

Large Items & Larger Quantities Ship Freight

Please call us at (800)206-8067 for your shipping estimate on larger items.

Our Package Box, All Vaults, and Racks must ship freight.

Order quantities of 4 or more mailboxes will ship freight. One exception is the M1-LT -- we've shipped 10 FedEx ground and it's cheaper than freight.

The T-Post for 3 generally ships freight. We can make the T-Post for 3 in two pieces (Not all welded together) and ship it FedEx ground if you want. We do this often, but it's after asking your opinion.

Locks & Keys ship USPS

All locks and keys ship USPS when ordered separately from a mailbox.

M1-LT – Lighter Weight High Security Mailbox