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Availability: Many In Stock
Sku: 950080B-10

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Please see the Color Chart to compare available Mailbox finishes with available Post finishes (for example, Rubbed Bronze and Graphite Bronze are quite different).

Please note: This product in Rubbed Bronze color is currently on backorder from the manufacturer. We estimate it will be available to ship on or after 02/16/2026. If you'd like to purchase today, we will hold your order until the product is ready to ship

Please note: This product in Black color is currently on backorder from the manufacturer. We estimate it will be available to ship on or after 03/15/2026. If you'd like to purchase today, we will hold your order until the product is ready to ship

 

Usually ships in 1-3 business days

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Centennial Post Mount Mailbox & Premium Steel Post Kit – Extra-Large USPS Approved Mailbox

The Centennial Post Mount Mailbox and Premium Steel Post Kit provides a refined, all-in-one solution for homeowners who receive large volumes of mail and packages while maintaining exceptional curb appeal. Built from heavy-gauge galvanized steel and finished with a durable powder-coated surface, this mailbox offers long-lasting strength, corrosion resistance, and a sleek, modern appearance.

Designed to meet USPS Standard 7C regulations, the Centennial features a spacious interior that easily accommodates a USPS Priority Mail Large Flat Rate Box (12" x 12" x 5.5") with room for additional mail and parcels. The included premium 19-gauge in-ground steel post is paired with a decorative ABS cover that conceals mounting hardware and concrete work for a clean, professional finish.

Key Features:

  • Heavy-Duty Construction: Heavy-gauge galvanized steel with stainless steel door pins for lasting durability.
  • Weather-Resistant Finish: Fully powder coated to protect against rust, corrosion, and outdoor elements.
  • Magnetic Door Closure: Provides smooth operation and a secure close every time.
  • Extra-Large Capacity: Accepts USPS Priority Mail Large Flat Rate Boxes (12" x 12" x 5.5") with additional room for parcels.
  • Complete Installation Kit: Includes extra-large mailbox, premium steel post, and all required mounting hardware.
  • Elegant Design Details: Die-cast aluminum handle and rigid powder-coated mailbox flag.
  • Durable Post System: 19-gauge galvanized steel post with decorative ABS cover hides mounting and concrete work.
  • Mail Capacity: Holds up to 2,176 cubic inches of mail and packages.
  • Dimensions: 64" H x 14.3" W x 18.3" D
Centennial Post Mount Mailbox with Premium Steel Post

Product Video

Explore the Centennial Post Mount Mailbox and Premium Steel Post Kit in this 360° product video. See its elegant design, heavy-duty construction, and spacious interior up close. Engineered to meet USPS Standard 7C regulations, the Centennial easily handles large packages while maintaining a polished, upscale appearance. The included in-ground steel post with decorative ABS cover ensures a seamless installation and a clean, professional finish.


Weight 21.69 lbs
Shipping Info

Usually ships in 1-3 business days

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Brand Architectural Mailboxes
Mount Type Post Mount
Material Galvanized Steel
Mailbox Size Extra Large
Mailbox Style Traditional
Mailbox Type Mailbox & Post Combo
Dimensions 64" H x 14.3" W x 18.3" D
Security Non-locking
Delivery Type USPS Delivery
Access Type Front Access
Shipping Estimate

Usually ships in 1-3 business days

Learn more about our Estimated Lead Times
Ships To Ships to the 48 contiguous United States. For AK or HI delivery, please contact us for a shipping quote.
Ship Method Ships via Freight Carrier - Scheduled Delivery
Shipping Policy

Thank you for your order! We will ship your order using the fastest, safest, and most reliable method possible. Small and medium-sized parcels will usually ship FedEx or UPS Ground, while large commercial items will ship via common freight carriers such as YRC, XPO Logistics, etc.

Every product on our site has been carefully selected to ship by a particular shipping method in order to provide you with an optimal delivery experience.

When your order ships, we will notify you via email. Included in your email will be a tracking number for your shipment. We encourage you to track your package online or on the phone with the carrier. Most companies can provide an estimated delivery date.

View our Full Shipping Policy here.
Return Policy

We offer a 90-day return period from the date of shipment. We will refund your order total, less our cost of shipping the item to you. In most cases, you will be responsible for the cost of shipping the item back to us.

Important: Orders returned without authorization will NOT be processed for credit or refunds. YOU MUST obtain a Return Goods Authorization Number (RGA#) from us so that the credit for the merchandise and any refund can be properly processed.

View our Full Return Policy here.