Mail Boss 7144 Box Spreader Bar for Two-Mailbox Applications - Sturdy

In this review of the Mail Boss 7144 Box Spreader Bar the bottom line is simple: this is a straightforward, heavy-duty solution for mounting two Mail Boss brand curbside mailboxes on a single post. Installers and homeowners who need a reliable dual-mount option will appreciate that the spreader bar is made of thick electrogalvanized steel and arrives with the basic hardware required for mounting to a Mail Boss post. It is not a mailbox or post, but as a dedicated mounting component it excels at delivering a secure, neat two-box setup.

Key Features

• Material: 12-gauge electrogalvanized welded steel provides a rigid support that resists bending under the weight of two curbside mailboxes.
• Finish: Durable powder-coated finish protects the metal from the elements and keeps the assembly looking clean for years.
• Compatibility: Designed to work with Mail Boss brand curbside mailboxes including Mail Boss, Mail Manager, and Package Master models for a predictable fit.
• Hardware included: Ships with the standard mounting hardware needed to install to a Mail Boss mounting post, making initial installation quicker.
• Two-box support: Allows two locking security mailboxes to share a single post, saving yard space and creating a unified appearance.

Who It's For

This spreader bar is aimed at homeowners, apartment managers, or small commercial properties that already use or plan to use Mail Boss brand curbside mailboxes and want to mount two units on one post. It is especially useful where curbside space is limited or a matched, uniform look is desired.

It is not for buyers seeking a complete mailbox solution; the spreader bar is a component only and requires Mail Boss mailboxes and a compatible mounting post. If you need a drop-in mailbox or a post included, look for a complete mailbox kit instead.

Pros & Cons

Pros

• Well-built from heavy painted steel, offering solid long-term support for two boxes.
• Powder-coated finish improves corrosion resistance and visual appeal.
• Easy installation to Mail Boss mounting posts and a precise fit with branded hardware.
• Saves space by allowing two mailboxes on a single post for a tidy curbside setup.

Cons

• Included hardware is geared to Mail Boss posts; additional fasteners may be needed for wooden or non-Mail Boss posts.
• Product is the spreader bar only, so buyers must purchase mailboxes and post separately.

Specifications

Material	12-gauge electrogalvanized welded steel
Finish	Durable powder-coated finish
Compatibility	Mail Boss curbside mailboxes (Mail Boss, Mail Manager, Package Master)
Includes	All necessary hardware to install with a Mail Boss mounting post
Use	Mount two mailboxes on one post
Sold as	Spreader bar only; mailboxes and mounting posts sold separately

Our Verdict

The Mail Boss 7144 Box Spreader Bar is a practical, no-nonsense component for anyone who needs to mount two Mail Boss curbside boxes on a single post. Its heavy-gauge steel construction and powder-coated finish deliver durability and a clean appearance, and it installs easily when paired with a Mail Boss mounting post. It represents good value for those who already own or plan to buy compatible Mail Boss mailboxes and want a dependable dual-mount solution.

Frequently Asked Questions

Does this include the mailboxes and post?
No, the product is the spreader bar only; mailboxes and mounting post are sold separately.

Will it fit non-Mail Boss posts?
It is compatible with most existing posts, but additional hardware may be required for wooden or non-Mail Boss posts.

Is the hardware provided sufficient?
It includes the necessary hardware to install with a Mail Boss mounting post, though some customers report needing extra fasteners for other post types.