10 best mailbox locking conversion kit for 2024

It took days of going through more than a thousand customer reviews and conducting expert researches to narrow down the list. Weve included a comparison table below to give you a quick summary of our top 10 mailbox locking conversion kit. Its followed by an in-depth review of each mailbox locking conversion kit. Hopefully, once you are done reading this article, you will be well informed about mailbox locking conversion kit and be able to select the right mailbox locking conversion kit for you without any hesitations.

Best mailbox locking conversion kit

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Best mailbox locking conversion kit reviews

1. Mail Boss 7506 Mail Manager Curbside Locking Security Mailbox, Black,Large

Feature

USPS Approved full-service residential locking security mailbox prevents mail-identity theft; Stainless steel hinges for ease of use
QUALITY: 14- and 16-gauge galvanized welded steel construction defends against vandalism
SECURITY: Innovative baffle door accepts small parcels, packages, and a box of checks and also deters fishing. Does not include or require Mounting Plate
PATENTED: Includes patented Anti-Pry latch lock mechanism to prevent leveraged entry with a screwdriver & high security anti-drill, anti-pick 12-disc wafer lock
ACCESSORIES: Includes concealed outgoing mail clip, 3 keys, and required installation hardware

2. Qualarc E1-MLBX-LKIT-BLK Rust Proof Galvanized Mailbox with Locking Insert, Steel Latch and Red Aluminum Flag, Black

Feature

Secure your mail with this locking mailbox made of galvanized steel that will not rust
Incoming mail slot opening: 6-3/8 inch w x 1 inch H
Larger mail, magazines and Outgoing mail can be placed on top of the locking insert
Locking door opening: 6-3/8"W x 5"H. Product Dimensions: 5.8"W x 4.5"H x 14.9"D
Tough powder coated finish will not scratch

3. Architectural Mailboxes 6300B-10 Oasis 360 Locking Parcel Mailbox, Extra Large, Black

Feature

USPS Approved Oasis 360 Locking Mailbox is 11.3 in. W x 11.5 in. H x 20 in. D
Accepts parcels 9.5 in. W x 12.6 in. L x 1.5 in. H to 9.5 in. W x 3.5 in. L x 2.5 in. H
Dual door locking parcel mailbox, two doors for easy access
Galvanized steel construction that is fully powder coated inside and out for added corrosion resistance
Predrilled 4 in. x 10 in. mounting holes in floor allows for easy installation. Hardware and mounting bracket may be required to mount to posts not manufactured by Architectural Mailboxes (not included)

4. Gibraltar Mailboxes MLM16KB1 Marshall Locking Mailbox, Large, Black

Feature

Concealed locking compartment protects mail from theft
Rust-resistant galvanized steel construction
Magnetic latch keeps door securely closed
Painted in an attractive glossy powder-coated finish for extra protection against weathering
Two keys provided for access to delivered mail
Internal mail clip for outgoing mail included
Aluminum outgoing mail flag
Mounting hardware sold separately
Match with any Gibraltar Mailboxes post with the designation letter code C
Capacity: 1475 Cubic Inches

5. Qualarc E1-MLBX-LKIT-WHT Rust Proof Galvanized Mailbox with Locking Insert, Steel Latch and Red Aluminum Flag, White

Feature

Secure your mail with this locking mailbox made of galvanized steel that will not rust
Incoming mail slot opening: 6-3/8 inch w x 1 inch H
Larger mail, magazines and Outgoing mail can be placed on top of the locking insert
Locking door opening: 6-3/8"W x 5"H. Product Dimensions: 5.8"W x 4.5"H x 14.9"D
Tough powder coated finish will not scratch

6. Qualarc Man-LCKIT Manchester Locking Conversion Kit

Feature

Convert your non-locking Manchester column mount mailbox to a locking mailbox
The locking door and plate fit inside of the faceplate and attach to the faceplate and masonry can of the mailbox
Made of powder coated steel
Adds security to keep mail out of reach from unwanted hands
Comes with lock and set of keys

7. Qualarc LMC-LKIT Lewiston Mailbox Locking Conversion Kit Black, 16"D x 6.5"W x 5"H

Feature

Convert your non-locking lewiston mailbox into a locking mailbox
The locking box secures inside of your lewiston mailbox
Incoming mail slot opening: 6 3/8 inch Width and 1 height. Locking door opening: H 5x w 6 3/8 inch
Adds security to keep mail out of reach from unwanted hands
Comes with heavy duty lock and set of keys. Made of powder coated steel

8. Qualarc LKIT Galvanized Steel Universal Locking Insert for E1 Economy Mailboxes 14.9"D x 5.8"W x 4.5"H

Feature

Turn your E1 economy mailbox into a locking mailbox with this insert
Larger mail, magazines and Outgoing mail can be placed on top of the locking insert
Incoming mail slot opening: 6-3/8 inch w x 1 inch H
Product Dimensions: 5.8 inch w x 4.5 inch H x 14.9 inch D
Comes with 2 keys and heavy duty lock

9. Through The Door Locking Key Drop Box Automotive Door Mail Slot Drop Boxes with Lock for Business with Tubular Lock Keys Baffle Prevents Money Fishing Dropbox Mail Slots for Doors Keys Rent Deposit

Feature

WE OFFER MORE THAN ANY OTHER SECURITY DROPBOX, FOR LESS! Through the door drop box that fits door up to 1 inch thick, rust proof powder coated steel, anti-theft lock and tubular key, lock protection metal plate, mail drop safe metal baffle, 500 cubic inches storage space, mounting hardware and instruction manual. Phew!
SAFEST DROPBOX IN THE MARKET. WE CHALLENGE! Our locking deposit box comes with anti-theft lock and TUBULAR KEY that cannot be duplicated, LOCK PROTECTION metal plate to prevent breakage of rear access door, metal baffle to PREVENT FISHING from outside! Also called as mail catcher for mail slot, security mail slot, double door mailbox, mail slots for doors, cash box with slot, door mail slot, drop box with lock and slot, locked drop box, door slot mailbox through wall
WORKS PERFECT AS drop mail box for envelopes up to 9.5 inches width, mails, letters, check, deposit, rent and money payment from the tenants, key drop box at automotive car rental garage, drop boxes with lock for business. Not suitable for receiving large mail items such as books, magazines, catalogs, booklets, manila envelopes.
HOLDS MORE THAN OTHERS. DOES NOT RUST! 500 cubic inches large storage space. Powder coated steel box and cover, doesnt rust and withstands weather conditions.
EASY SET UP in minutes. Get your securitydrop box set up in a matter of minutes, using our VISUAL INSTRUCTION MANUAL. In the unlikely event you arent delighted with the product, you can return for a full refund or replacement.

10. dVault Full Service Vault DVCS0015 Secure Curbside Mailbox/Package Drop with Locking Letterbox (Black)

Feature

Never Worry About Package Or Mail Theft Again!
Patented security-drop door and Anti-Pry Dual Hook Posi-Locked storage compartment prevent access to deposited contents
Constructed from heavy-duty 16 gauge galvanized steel with durable powder coated finishes
Stainless steel hinges and fasteners
USPS Approved! Made in the USA

Conclusion

By our suggestions above, we hope that you can found the best mailbox locking conversion kit for you. Please don't forget to share your experience by comment in this post. Thank you!