Centennial Post Mount Mailbox
Weather Ready: Made with galvanized steel to support performance through rain, snow, and sun
Rust-Resistant from Top to Bottom: This post mounted mailbox features a tough powder-coat finish, adding an extra layer of protection to this curbside mailbox.
Built for Big Deliveries: This extra large mailbox offers oversized space for multiple large packages, plus all your other curbside mailbox deliveries.
USPS Post Master General Approved: Mailbox is USPS approved, as required for all curbside delivery by U.S. Mail carriers - for smooth, uninterrupted service.
Install in Minutes: Fully assembled & ready to mount. Just note: mounting hardware comes with all Architectural Mailboxes' compatible posts, not the mail box.
Post "F" Compatible: Made to mount effortlessly on all Architectural Mailboxes posts marked with letter F.
Secure Magnetic Closure: Keeps mail box door tightly shut to protect your curbside mailbox deliveries from wind and rain.
Designed in the USA: Thoughtfully engineered in the United States with a focus on durability, function, and style.
SKU: 950020B-10
Description
The Centennial is an extra large mailbox built for high-volume mail and oversized packages. It is USPS approved and features the T4 interior size, the largest standard mail carrier opening available. This model has been featured in the USPS Postal Bulletin for nearly a decade. Whether you need mailboxes for outside, a durable mail box for your house, or a heavy-duty outdoor mailbox that holds up in the elements, the Centennial is built for it.
Constructed from powder-coated steel with a bold steel flag and cast aluminum handle, this post mounted mailbox is made to last. A spacious interior and solid construction make it a dependable choice for residential mailboxes and high-delivery households. If you need a large curbside mailbox with room for everything that lands at your door, the Centennial delivers.
Specifications
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Stamped with USPS Approval
Did you know? Every curbside mailbox has to get the thumbs-up from the United States Postmaster General. These mailboxes meet tough rules to keep your mail safe, easy to grab, and well protected.
Tested, Trusted, Approved
Stay delivery-ready with a USPS approved mailbox that meets every standard.
Deliveries Depend on It
Stay delivery-ready with a USPS approved mailbox that meets every standard.
Don’t Settle for “Standards”
Some mailboxes claim to “meet standards,” but only USPS approval guarantees smooth delivery.














