Mount Multiple outdoor mailboxes with the easy to install 4 mailbox spreader bar by mail boss Modern Architectural Epoch Design epic mailbox

3 Box Spreader

Name: 3-Box Spreader Bar for Mail Boss Mailboxes - Mailboss
SKU: 714x
Price: 54.99 USD
Availability: InStock

Starting at $54.99

The 3 Box Spreader Bar allows you to mount up three (3) Mail Boss curbside locking security mailboxes on one post.

The spreader bar is compatible with Mail Boss Mounting Posts and most existing wood or metal posts. Made of 12-gauge galvanized steel, the spreader bar provides a sturdy multi-unit solution. Features powder-coated finish available in black, white, granite, or bronze.

*Mailboxes & mounting posts sold separately
* Includes necessary hardware to install with a Mail Boss mounting post, additional hardware may be required for use with wooden posts or non-Mail Boss posts.

Frequently bought together

3 Box Spreader

Mailbox Post Depth Extender

1 × Mailbox Post Depth Extender

$36.99

In Ground Post (43")

Meets mailbox height requirements based on residential mailbox laws standard rural mailbox height Galvanized welded Steel mailbox post strongest mailbox post heavy duty metal mailbox post cover Modern Architectural Epoch Design epic mailbox

1 × In Ground Post (43")

Select Color

Clear

Starting at $59.99

Mounting Post (37")

1 × Mounting Post (37")

Select Color

Clear

Starting at $69.99

Surface Mount Post (27")

1 × Surface Mount Post (27")

Select Color

Clear

In stock

Starting at $64.99

Base Plate

1 × Base Plate

Select Color

Clear

In stock

Starting at $54.99

Select Color

Clear

SKU: 714x Categories: Mailbox Posts & Spreaders, Multi-Family & Cluster Mailbox Spreader Bar Kits

Size Comparison Chart

Easily determine the perfect mailbox for you:

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Application

Wall Mount

Curbside

Vandal Resistant Construction

11 lbs of 1.2mm galvanized welded steel.

18 lbs of 2.0mm & 1.5mm 14 & 16 gauge galvanized welded steel.

20 lbs of 2.0mm & 1.5mm 14 & 16 gauge galvanized welded steel.

23 lbs of 2.0mm & 1.5mm 14 & 16 gauge galvanized welded steel.

40 lbs of 2.5mm & 2.0mm 12 & 14 gauge galvanized welded steel.

53 lbs of 2.5mm & 2.0mm 12 & 14 gauge galvanized welded steel.

Uses

Ideal for residential deliveries, schools, office, home, mail centers, restaurants, key drops, etc. Designed to secure interoffice mail, money, checks, keys, ballots and more!

Optimal for walk up residential deliveries, small mail bundles, magazines and checks.

A decorative alternative to the metro, optimal for walk up residential deliveries, small mail bundles, magazines and checks.

Secure and affordable curbside box accepts packages up to 3.5"h x 10.2"w and can accept mail bundles, books, prescription medications, magazines and checks. Innovative baffle door deters both hand & tool fishing.

The original and popular residential curbside locking mailbox, accepts packages up to 1.9"h x 10.25"w and accepts mail bundles, books, prescription medications, magazines and checks. Incoming mail slot deters fishing by hand.

Our largest residential mail box, ideal for commercial use, and bulk mail deliveries. Accepts legal size envelopes and packages up to 4.5"h x 4.5"w x 10.5”l. Mail shield prevents both hand & tool fishing while allowing for large deliveries.

Mail Storage Capacity

2-3 days.

3-7 days.

1-2 weeks.

7-10 days.

Installation

Wall Anchors.

Fast-Trak bracket mounting system for easy mounting to walls, also compatible with post mounts.

Universal hole pattern for multiple mounting applications.

Fast-Trak mounting plate installs easily on posts, planks, or platforms in minutes.

Features

Heavy duty galvanized steel with stainless steel hinges, high security anti-pick lock, 3 laser cut keys, installation hardware.

Heavy duty galvanized steel with stainless steel hinges, high security anti-pick lock, 3 laser cut keys, installation hardware, reflective house numbers.

Heavy duty galvanized steel with stainless steel hinges, high security anti-pick lock, 3 laser cut keys, installation hardware, plastic floor liner.

Heavy duty galvanized steel with stainless steel hinges, high security anti-pick lock, 3 laser cut keys, installation hardware, reflective house numbers.

Heavy duty galvanized steel with stainless steel hinges, high security anti-pick lock, 3 laser cut keys, installation hardware, reflective house numbers, plastic floor liner.

Mounting Applications

Capable of being mounted flush side by side and top to bottom for customizable residential apartment cluster mailboxes and professional commercial office document drops.

Capable of being mounted flush side by side and with only a small gap top to bottom, for customizable residential apartment cluster mailboxes or commercial office document drops.

Capable of being grid mounted with only a small gap side by side and top to bottom, for customizable residential apartment cluster mailboxes or commercial office document drops.

Capable of being mounted within a brick column, or post mounted individually or in a cluster with the use of a 2 box, 3 box , or 4 mailbox spreader bar.

Capable of being mounted within a brick column, or post mounted individually or in a cluster with the use of a 2 box, 3 box , or 4 mailbox spreader bar

3 Box Spreader

Mail Boss multi unit mailbox spreader bars allow you to easily install multiple mailboxes on a single steel mailbox post.

Features and Benefits

Features and Benefits

Specifications & Installation

Specifications & Installation

Similar Locking Systems

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2 Box Spreader

4 Box Spreader

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Size Comparison Chart

Size Comparison Chart

Customer Reviews

Mail Boss is a division of Epoch Design

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