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Underbody Toolboxes

Underbody toolboxes provide lockable, weather-resistant storage beneath trucks and trailers. They maximize available space while keeping tools and equipment secure. Designed to withstand harsh road conditions, these boxes are built from tough materials. Underbody toolboxes are widely used in towing, construction, and service industries for added convenience.

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Bawer Black Steel Box w/Stainless Steel Lid

This Bawer Black Powder-Coated Steel Tool Box comes equipped with a stainless steel single or double door with lockable stainless steel T-Handle, gas shock door openers, and a unique aerator and vent design to help keep the toolbox dry. Constructed from a single piece main structure; corrosion and chemical resistant with less welds means more strength and durability.
$319.99 $1,090.99

Bawer Stainless Steel Single Door Toolboxes

This is Bawer's 100% polished stainless steel single door toolbox. Installed with polished lockable t-handles and gas shock door openers to assist with smooth opening and closing. The boxes have a weather tight seal to protect against harsh weather. These have a single main piece structure with no unnecessary welds which means a stronger box.
$462.99 $1,232.99

Bawers Black Steel Box w/ Steel Double Door

This Bawer black steel box with black steel double door tool box comes equipped with a aluminum double door and two lockable stainless steel T-Handles, gas shock door openers, and a unique aerator and vent design to help keep the tool box dry. Constructed from a single piece main structure and is corrosion and chemical resistant with less welds means a more strength and durability.
$462.99 $690.99

Bawer Stainless Steel Toolbox w/Double Doors

This is Bawers Stainless Steel Tool Box comes equipped with a stainless steel double door and two lockable stainless steel T-Handles, and a unique aerator and vent design to help keep the tool box dry. Constructed from a single piece main structure; corrosion and chemical resistant with less welds means a more strength and durability.
$847.99 $1,445.99
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Underbody Toolboxes for Trucks and Trailers

When it comes to maximizing storage on a flatbed, wrecker, or trailer, an underbody toolbox is one of the most practical solutions available. Mounted beneath the truck bed, these toolboxes provide secure and accessible storage while keeping your deck space clear for equipment and cargo. Whether you’re searching for a truck underbody toolbox or a trailer underbody toolbox, this style of storage delivers the durability and efficiency professionals depend on.

Why Choose an Underbody Toolbox?

  • Space Efficiency – Mounting toolboxes under the bed keeps the deck open and increases usable storage.
  • Durability – Available in both aluminum underbody toolboxes and heavy-duty steel, these options are built to withstand road debris and daily wear.
  • Security – Locking latches and reinforced doors protect valuable tools from theft and weather.
  • Versatility – Offered in a wide range of sizes and door configurations to fit flatbeds, trailers, and service trucks.

A flatbed underbody toolbox not only organizes your equipment but also protects it from the elements, making it a must-have for towing professionals, contractors, and fleet operators.

Best-Selling Underbody Toolboxes

Our inventory includes trusted models from top brands:

Whether you’re looking for a Buyers underbody toolbox, a Bawer underbody toolbox, or other leading brands, we provide a wide selection of sizes and finishes to meet your storage needs.

Trusted Brands for Underbody Storage

Our lineup includes RC Industries, In The Ditch, Miller Industries, Buyers Product Co., Phoenix USA, and Bawer. From lightweight aluminum toolboxes to polished stainless steel, each manufacturer offers solutions tailored to different vehicle types and working conditions.

Choosing the Right Underbody Toolbox

When selecting the best toolbox for flatbeds or trailers, keep these factors in mind:

  • Material Selection – Choose aluminum for rust resistance and lighter weight, or steel for maximum toughness.
  • Size and Fit – Measure your mounting space carefully to ensure the right toolbox dimensions.
  • Door Configuration – Single- and double-door models offer different access points based on vehicle layout.
  • Intended Use – Contractors may prioritize large storage volume, while tow operators often look for compact, reinforced options.

For long-term care and upgrades, we also carry Toolbox Parts to keep your storage system in top condition.

FAQ: Underbody Toolboxes

What is the main advantage of an underbody toolbox?
It frees up flatbed or trailer deck space by providing secure, accessible storage beneath the vehicle.

Are aluminum underbody toolboxes strong enough for heavy-duty use?
Yes, aluminum toolboxes are designed to be both lightweight and durable, with corrosion resistance that makes them ideal for long-term use.

Can underbody toolboxes fit both trucks and trailers?
Most models are versatile enough to be mounted on flatbeds, service trucks, and trailers, provided you choose the correct size and bracket system.

Do underbody toolboxes come in multiple sizes?
Yes, they are offered in a wide range of sizes and door styles to fit different vehicles and storage requirements.