Mailboss® Triple High-Security Locking Mailbox & Post

The Triple Mail Boss package puts 3 Mail Boss high-security locking mailboxes on one post with a spreader bar. It suits duplexes, townhomes, rentals and shared driveways where each household needs its own locked box. Each mailbox mounts with the Fast-Trak plate, so the boxes go up quickly once the post is set.

Highlights

• 3 locking mailboxes, a 3-box spreader bar and a steel post in one package
• USPS approved for curbside delivery (Standard 7C). Check with your local postmaster before installing.
• Commercial grade 12 disc high-security wafer lock with a patented anti-pry latch
• Incoming mail slot takes a box of checks: 1.9" H x 10.25" W
• 12 and 14 gauge electro-galvanized welded steel with a durable powder-coated finish and stainless steel hinges
• Patented Fast-Trak mounting plate for quick installation
• Each mailbox comes with 3 keys, a vandal resistant flag, reflective house numbers, a drill bit and mounting hardware

Specifications

What's included

• 3 x Mail Boss locking mailbox (view), each with 3 keys, a vandal resistant flag, reflective house numbers (3 of each number 0-9) and a Fast-Trak mounting bracket
• 1 x 3-box spreader bar (view)
• 1 x Mail Boss steel post: in-ground or surface mount with base plate, based on your selection
• Drill bit and mounting hardware
• Optional: newspaper holder

Installation

The 43" in-ground post is set in a hole and fixed with concrete. The surface mount posts bolt to an existing concrete pad or sidewalk with a steel base plate. The spreader bar bolts to the top of the post, and each mailbox attaches to the bar with its Fast-Trak plate. Read our curbside mailbox installation guide for placement and height tips. Check with your local postmaster before installing.

Shipping and returns

• Free shipping.
• Ships direct from the manufacturer in Washington State, usually within 1 to 3 business days. Tracking is emailed when it ships.
• Returns accepted within 30 days of delivery. Request a return first to get an RGA number.
• Items must be unused, not assembled, installed or modified, and in all original packaging. You pay return shipping.
• Restocking fee: 20% residential, 25% commercial or bulk orders (5+ items).
• Report shipping damage or missing parts within 48 hours of delivery.
• Full details: Shipping and returns policy.

Warranty

Mail Boss limited lifetime warranty for the original owner on residential installations. It covers manufacturing defects and moving parts. See our warranty page for details.

Related products

• Mailboss 2-Box Spreader Bar, Steel

Frequently asked questions

Will packages fit in the mailbox?

No. The Mail Boss is built for letters and flat mail. Its incoming slot takes items up to 1.9" high and 10.25" wide, about the size of a box of checks. If you want small packages, choose the Package Master instead.

Is it USPS approved?

Yes. It is USPS approved for curbside delivery (Standard 7C). Check with your local postmaster before installing.

How many keys come with it?

Each mailbox comes with 3 keys. If you need a replacement later, the key number is stamped on the key.

Which post should I choose?

Choose the 43" in-ground post if you will set the post in a hole with concrete. Choose a surface mount post (37" or 27") if you are bolting to an existing concrete pad or sidewalk. Not sure which height you need? Email us at customercare@mailboxempire.com before you order.

Is it hard to install?

Set the post first, then mount the spreader bar and the mailboxes with the Fast-Trak plate. The drill bit and mounting hardware are in the box.

How fast will it ship?

It ships from Washington State, usually within 1 to 3 business days, with free shipping. You get a tracking number by email when it ships.