by Laura Dominguez

On-Bed vs. UnderBody Toolboxes: How to Maximize Bed Space on Your Work Truck

The bed of your truck is premium real estate. Because bed space is ...
On-Bed vs. UnderBody Toolboxes: How to Maximize Bed Space on Your Work Truck

The bed of your truck is premium real estate.

Because bed space is precious, deciding how to organize your tools and supplies is one of the most important decisions you'll make for your daily grind. Tradesmen and fleet owners are constantly debating the trade-offs of giving up top-side bed space versus hanging a box underneath the chassis.

Both options are incredible work truck storage solutions that have their own set of pros and cons. Let's cover the advantages of each style to help you create the perfect truck bed space optimization setup for your needs.

Top-Side Toolboxes: The Classic Workhorse

From crossbed to saddle or chest toolboxes, topside toolboxes are the standard. They are the most popular style seen on the job site, and for good reason.

The Pros:

  • Easy Access: You don't have to bend down or take a knee to get your gear. Everything is chest-high and within-reach.
  • Large Capacity: Because they often span nearly the entire width or length of the bed, crossover boxes offer a ton of continuous storage space, making them perfect for longer tools like pry bars, levels, or shovels.
  • More Style Options: Since the area where you would mount a top-side box is plentiful, you can choose from more styles, sizes, and mounting locations.

The Cons:

  • Loss of Bed Space: Everything's a trade-off. If you mount boxes on your bed, there's less space to haul wood, pipes, and other materials.
  • Rearview Visibility: Depending on the box's depth and profile, it can sometimes reduce your rear-window visibility.

Underbody Toolbox: The Space Saver

Underbody boxes are mounted underneath the truck bed, typically sitting right in front of or behind the rear wheels. They are incredibly popular on flatbeds, service bodies, and heavy-duty commercial rigs.

The Pros:

  • Total Bed Optimization: The biggest advantage of an underbody box is that it leaves your truck bed 100% open. If you regularly haul large pallets, bulk material, or heavy equipment, this keeps your deck completely clear.
  • Lower Center of Gravity: Keeping heavy tools and chains stored lower to the ground helps maintain a better center of gravity for your truck, which is a nice bonus for handling.
  • Out of Sight, Out of Mind: Tucking your tools underneath the truck makes them less conspicuous to prying eyes, adding an extra layer of passive security.

The Cons:

  • Accessibility: You have to crouch or kneel to reach your gear, which can be a pain if you're on a muddy worksite or parked in a tight spot.
  • Ground Clearance: Hanging a box under your truck reduces your overall ground clearance. If your job sites involve deep ruts, off-road travel, or aggressive break-over angles, you have to be mindful not to smash the box on rocks or curbs.

The Verdict: It's Your Call

At the end of the day, it all depends on your needs. Want quick, waist-high access and carry a lot of long tools? An on-bed box is the way to go. If your daily payload demands every square inch of your truck bed, underbody boxes are the perfect solution. The good news? We offer premium options for both. Here's a breakdown of the lines we offer:

BRUTE Line Application Key Features
BRUTE™ Commercial Class Toolboxes Lighter-class trucks Contractor-preferred design with push-button rotary latches, integrated drawer systems, and heavily reinforced lids / floors.
BRUTE-HD™ Heavy Duty Toolboxes Heavy-class trucks
(Topsider and Underbody)
Built with rugged .100” thick aluminum diamond tread. Features flip-up doors and pullout BEDSAFE roller drawer systems.
BRUTE™ HD Aluminum Flatbeds Class 2–7 trucks
(Custom sizes available)
Engineered with extra-thick I-beams, standard prewired LED lighting, and includes stake pocket rub rails.

Upgrade Your Storage with BRUTE Toolboxes

Since 1992, BRUTE has been designing and building rugged, contractor-focused truck storage solutions right here at our production facility in Sturgis, Michigan. Whether you decide on a crossover or an underbody box, you need equipment that works as hard as you do.

Here is why tradesmen and fleet managers trust BRUTE:

  • Made in the USA: Proudly manufactured in Michigan to deliver premium quality and heavy-duty craftsmanship.
  • Strong Aluminum Build: Constructed from rust-resistant aluminum, our boxes offer rugged structural integrity that easily survives off-road vibrations and heavy payload flex.
  • Weather-Resistant Design: A beveled lid with an integrated rain gutter directs water to roll off, while a full rubber weather seal locks out rain, snow, and dust, keeping your gear clean and dry.
  • Lockable for Security: Protect your expensive tools from sticky fingers. Our secure locking mechanisms and rust-resistant stainless steel T-handles (and latches) provide smooth, reliable operation even after a harsh winter.
  • Gas-Assisted Lid Supports: Enjoy easy, hands-free access with sleek lids supported by strong gas shocks.
  • Exact-Fit Options: Available in multiple sizes for commercial, flatbed, and commuter trucks. Just check the dimensions to perfectly match your bed!
  • Limited Lifetime Warranty: Backed by a Limited Lifetime Warranty and a 12-month warranty on the product finish.

Stop letting a disorganized truck slow you down. Contact us today if you have questions about our lineup of in- and on-bed and underbody toolboxes and start maximizing your truck bed real estate!