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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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RC Industries M Series Aluminum Toolbox w/Stainless Steel Door

RC Industries Aluminum Toolboxes provide superior security, convenience, and protection for whatever you want to store. Heavy Duty Aluminum Toolbox.
$692.99 $1,717.99

RC Industries Black Powder Coated Steel Toolbox w/Stainless Steel Door

RC Industries Heavy Duty Black Powder Coated Steel Toolboxes provide superior security, convenience, and protection for whatever your storage needs are. RC Toolboxes are proudly built in the Elkhart, IN for the American Working man. Each box features our pan formed door with automotive door seal ensuring that your valuables stay dry regardless of the road conditions. Our anchor compression latch is the most durable theft deterrent handle in the market, keeping tools safe.
$594.99 $1,576.99

RC Industries Steel Black Powder Coat ToolBox

RC Industries Heavy Duty Black Powder Coated Steel Box and Door provide superior security, convenience, and protection for whatever your storage needs are. RC Toolboxes are proudly built in the Elkhart, IN for the American Working man. Each box features our pan formed door with automotive door seal ensuring that your valuables stay dry regardless of the road conditions. Our anchor compression latch is the most durable theft deterrent handle in the market keeping tools safe from harm.
$536.99 $1,069.99

RC Industries, Aluminum Toolboxes w/ Aluminum Doors

Provide superior security, convenience, and protection for whatever you want to store. Heavy Duty Aluminum Toolbox. Constructed from 10 ga. aluminum with a 10 ga. aluminum door Features a unique water resistant door gasket Stainless steel T-handle latch with lock & key Automotive rubber bulb seal 4-Sided weather shielded door frame Unique gusseted, adjustable chain bracket
$593.99 $1,579.99

RC Industries Underbody Tool Box - Steel - 9 Cu Ft - Textured Black

48" Long x 18" wide x 18" tall locking tool box mounts to the underbody of your truck or trailer to provide secure storage. Weatherproof neoprene seal and seamless corners keep your equipment dry. Textured black powder coated steel.
$714.99

RC Industries Diamond Bright Aluminum Swing Down Door Toolbox

This RC Industries swing-down door off-set hinge tool box made from .100 diamond bright aluminum .The Top Compartment is approoximately 5" deep with a lift up lid and stainless steel paddle latch with a cylinder lock included with neoprene weather seals. The bottom compartment is a swing down door with stainless steel t-handles and cylinder lock with heavy-duty door retainer chains.
$674.99 $763.99

RC Industries Black Power Coated Steel Swing-Down Door Toolbox

This is RC Industries single or double swing down door (bottom hinging) (depending on length). These toolboxes are made from 14G steel with an anchor compression latch with cylinder lock and is equipped with heavy-duty door retainer chains.
$640.99 $1,015.99

RC Industries Diamond Bright Aluminum Double Side Swing Doors Toolbox (Road Side)

This is RC Industries double side swinging doors with no center post made from .125 diamond bright aluminum. The toolbox has one single lift door and is equipped with an automotive style bulb seal to keep water out.
$1,084.99 $1,295.99

RC Industries Double Side Swing Doors

RC Industries Heavy Duty aluminum Toolboxes provide superior security, convenience, and protection for whatever your storage needs are. RC Toolboxes are proudly built in the Elkhart, IN for the American Working man. Each box features our pan formed door with automotive door seal ensuring that your valuables stay dry regardless of the road conditions. Our anchor compression latch is the most durable theft deterrent handle in the market keeping tools safe from harm. This box does not have a center post. You can choose to have this made as a Passenger side (curbside) toolbox or Driver side (Roadside) toolbox.
$1,480.99 $1,747.99

RC Industries Aluminum Toolbox w/Stainless Steel Swing Doors

RC Industries Side Swing Aluminum Toolboxes provide superior security, convenience, and protection for whatever your storage needs are. RC Toolboxes are proudly built in the Elkhart, IN for the American Working man. Each box features our pan formed door with automotive door seal ensuring that your valuables stay dry regardless of the road conditions. Our anchor compression latch is the most durable theft deterrent handle in the market keeping tools sThis box has a center post and can be hinged according roadside or curbside mounting.
$1,544.99

RC Industries Toolbox, Alum. W/Alum. Door, 60x18x18

RC Industries Heavy Duty aluminum Toolboxes provide superior security, convenience, and protection for whatever your storage needs are. RC Toolboxes are proudly built in the Elkhart, IN for the American Working man. Each box features our pan formed door with automotive door seal ensuring that your valuables stay dry regardless of the road conditions. Our anchor compression latch is the most durable theft deterrent handle in the market keeping tools safe from harm.
$1,591.99
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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.