Sinclair Curbside Mailbox System

The Sinclair curbside mailbox system has a deeply embossed, elegant scroll arm. The Sinclair curbside mailbox system is available in four mounting styles; Front Single (FS), Front Double (FDBL), Side Single (SS) and Side Double (SDBL). Minimum order required for all PRO-SERIES Mailbox Systems.

How to configure your Sinclair Curbside Mailbox System



Step 1 - Select a Mounting Bracket

Choose from one of the Sinclair mounting bracket styles shown above; Front Single (FS), Front Double (FDBL), Side Single (SS) or Side Double (SDBL).



Step 2 - Select a Post



Step 3 - Select a Post Topper

Toppers for 3" round posts



Step 4 - Select a Mailbox

Cast Aluminum Mailbox
8 3/4" W x 10" H x 20" D

Cast Aluminum Mailbox
8 1/4" W x 9" H x 18" D

Rolled Aluminum Mailbox
with Cast Aluminum Door
9 1/2" W x 11 1/4" H x 21 3/4" D

Cast Aluminum Mailbox
9" W x 10" H x 19 3/4" D

Cast Aluminum Mailbox
9 1/2" W x 11 1/4" H x 20 3/4" D

Standard Steel Mailbox
7" W x 9" H x 20" D



Step 5 - Select a Base (optional)

Bases for 3" round posts



Bases for 4" round posts



Base for 4" x 4" square posts



Step 6 - Select a Finish

Click here to choose from our selection of finish choices. Custom colors are available.



Step 7 - Select Address Numbers (optional)

Available in your choice of self adhesive stainless steel, polished brass or reflective vinyl. 2" and 3" tall numbers sizes available.
Durable and easy to apply. Numbers can be put on the front or sides of the mailbox, they also can be applied to mounting bracket address plaques (where applicable).


Address Number Options

2" and 3" tall Stainless Steel
self adhesive numbers



2" and 3" tall Polished Brass
self adhesive numbers

2" and 3" tall White Reflective
vinyl numbers

2" and 3" tall Gold Reflective
vinyl numbers

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