Sterling Onyx

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$625.00

Nationwide shipping availableMost mailbox products ship throughout the U.S. Shipping details

Mailbox Finish:

Black / Black Door White / Stainless Door Black / Stainless Door

Mailbox Size:

Standard XL

Locking:

Non-Locking Locking

Variant

Customize Your Sterling Mailbox

Choose your mailbox finish and available options.

Mailbox Finish

Mailbox Size

Locking

Post Color

House numbers

Optional · One price covers your complete address, supplied and applied to this mailbox.

Add professional installationInstallation & standard mailbox removal$250

Installation ZIP code

Enter your ZIP to calculate installation pricing from Boca Raton.

View installation distance pricing

Driving distance from Boca Raton	Installation
0–50 miles	$250
51–75 miles	$350
76–100 miles	$450
101–125 miles	$550
126–150 miles	$650
151–175 miles	$800
176–200 miles	$1000

Estimated driving distance. New reinforced base, concrete removal, and haul-away are additional. Beyond 200 miles, contact us for a quote.

What are we replacing?

A standard post anchored in a concrete footing counts as wood, plastic, or metal.

Installation & removal$250

Service estimate per mailbox, excluding the mailbox price. Local base pricing shown; installation location must be confirmed.

Review these options, or uncheck installation to purchase the mailbox on its own.

Popular Upgrades & Accessories

Base & Protection

Mailbox Base Box Post-Mounted From $200

Protective Ceramic Coating $75

Configured total$625.00

Before tax and shipping.

View assembly & installation guide

Product Overview

The Sterling Onyx is the premium aluminum option in the Sterling collection, combining the same 4" × 4" powder-coated aluminum cross-arm post with a rust-resistant aluminum mailbox.

Onyx offers the widest range of configurations in the collection, including Standard and XL sizes, non-locking or locking versions, and painted or stainless-steel door combinations.

Features

4" × 4" powder-coated aluminum cross-arm post
Premium aluminum Onyx mailbox
Rust-resistant construction
Standard and XL sizes available
Non-locking and locking configurations available
Mailbox finishes: Black shell/Black door, Black shell/Stainless door, White shell/Stainless door
Standard: 20.5" L × 8.5" W × 8.25" H
XL: 20.5" L × 11.5" W × 8.25" H
Stainless-door finish has no additional charge
Outgoing-mail flag included
Custom house numbers available
Made to order for your home

Why Choose Sterling Onyx?

Sterling Onyx is the most configurable Sterling mailbox, offering premium aluminum construction, optional locking security, XL capacity, and stainless-door styling.