When searching for rated under tonneau truck tool boxes, durability, security, and space optimization are key factors. The 2 Pack Underbody Truck Tool Box stands out for its heavy-duty steel construction and waterproof design, making it ideal for tough environments. The UWS EC20503 offers a secure lock and aluminum build for a sleek, corrosion-resistant option. However, tradeoffs include higher cost for premium models and potential installation complexity. Keep reading for a full breakdown of the best options for different needs and budgets.
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Key Takeaways
- Heavy-duty steel options excel in durability but tend to be heavier and less corrosion-resistant than aluminum models.
- Locking mechanisms vary significantly; premium options typically offer more secure, tamper-proof locks.
- Size and capacity are crucial; larger boxes provide more storage but may be harder to install or fit under certain tonneaus.
- Waterproof features are common but vary in quality; sealing and material choice determine resistance to the elements.
- Price ranges from budget-friendly to premium, with tradeoffs in build quality, security features, and ease of installation.
| 2 Pack Underbody Truck Tool Box, 36″x18″x18″ Heavy Duty Steel Storage Chest with T-Handle Lock & Keys, Waterproof Organizer for Pickup, Trailer, RV, Flatbed |  | Best Overall for Versatile Heavy-Duty Storage | Item Dimensions: 36″L x 18″W x 18″H | Number of Items: 2 | Material: Carbon steel | VIEW ON AMAZON | See Our Full Breakdown |
| 36-Inch Heavy-Duty Steel Underbody Truck Tool Box with Lockable T-Handle |  | Best for Classic Heavy-Duty Steel Security | Material: Cold-rolled steel | Dimensions: 36 x 12 x 14 inches | Locking Mechanism: Reinforced T-handle with two keys | VIEW ON AMAZON | See Our Full Breakdown |
| UWS EC20503 Secure Lock 48-Inch Matte Black Heavy-Wall Aluminum Under Tonneau Cover Tool Box, RigidCore Lid |  | Best for Lightweight Security Under Tonneau Covers | Height: 16-1/2 inches | Material: Aluminum | Lid Type: RigidCore foam-filled | VIEW ON AMAZON | See Our Full Breakdown |
| UWS EC20501 Secure Lock 48-Inch Heavy-Wall Aluminum Under Tonneau Cover Tool Box, RigidCore Lid |  | Best for Aluminum Durability with Compatibility Focus | Height: 16-1/2 inches | Material: Aluminum | Lid Technology: RigidCore foam-filled | VIEW ON AMAZON | See Our Full Breakdown |
| FORWODE 36x17x18 Inch Underbody Aluminum Truck Tool Box with Lock & Foldable T-Handle Waterproof |  | Best Waterproof Aluminum Underbody Storage | Dimensions: 36 x 17 x 18 inches | Material: Aluminum | Lock Type: Built-in lock | VIEW ON AMAZON | See Our Full Breakdown |
| Dee Zee DZ 960D Under Tonneau Storage Drawer |  | Best Overall for Heavy-Duty, Secure Undercover Storage | Material: Heavy-duty steel | Finish: Black powder coat | Length: 60 inches | VIEW ON AMAZON | See Our Full Breakdown |
| VEVOR Underbody Truck Box, 36″×14″×16″ Aluminum Storage Toolbox with Lock and Keys |  | Best for Lightweight, Waterproof Aluminum Storage | Material: Aluminum | Dimensions: 36″ L x 14″ W x 16″ H | Weight: 24.7 pounds | VIEW ON AMAZON | See Our Full Breakdown |
| rated under tonneau truck tool boxe | Material |
|---|---|
| 2 Pack Underbody Truck Tool Bo | Carbon steel |
| 36-Inch Heavy-Duty Steel Under | Cold-rolled steel |
| UWS EC20503 Secure Lock 48-Inc | Aluminum |
| UWS EC20501 Secure Lock 48-Inc | Aluminum |
| FORWODE 36x17x18 Inch Underbod | Aluminum |
| Dee Zee DZ 960D Under Tonneau | Heavy-duty steel |
| VEVOR Underbody Truck Box | Aluminum |
More Details on Our Top Picks
2 Pack Underbody Truck Tool Box, 36″x18″x18″ Heavy Duty Steel Storage Chest with T-Handle Lock & Keys, Waterproof Organizer for Pickup, Trailer, RV, Flatbed
This set of two steel underbody toolboxes stands out for offering a robust, weatherproof solution that maximizes space while being suitable for trucks, trailers, and RVs. Compared to the single larger options like the UWS EC20503, the dual design provides more flexibility in placement and organization. Its heavy-duty carbon steel construction ensures durability and resistance to rust, making it ideal for all-weather use. However, the weight can make installation challenging without help, and the basic T-handle lock may not satisfy those needing high security. This choice makes the most sense for users who need multiple secure storage compartments on different vehicles or trailers, but it might be less appealing for those seeking lightweight, easy-to-mount solutions.
Pros:- Heavy-duty carbon steel construction resists rust and corrosion
- Waterproof and weather-sealed for all-season protection
- Secure T-handle lock with multiple keys for basic security
Cons:- Heavy weight complicates installation and handling
- Limited to specific dimensions, which may not fit all beds
- Locking system may not deter highly determined theft
Best for: Tradespeople or RV owners needing durable, weatherproof storage on multiple vehicles
Not ideal for: Users seeking lightweight, easy-to-install boxes or high-security locking systems
- Item Dimensions:36″L x 18″W x 18″H
- Number of Items:2
- Material:Carbon steel
- Finish:Powder-coated black
- Locking System:T-handle lock with 4 keys
- Weather Resistance:Waterproof and weather-sealed
Our verdict“This set is ideal for users needing rugged, weatherproof storage with multiple compartments, accepting some heft and basic security features.”
36-Inch Heavy-Duty Steel Underbody Truck Tool Box with Lockable T-Handle
This 36-inch steel underbody toolbox offers solid, weatherproof storage with a reinforced T-handle lock, making it a reliable choice for hauling tools on trucks and trailers. Compared to the FORWODE aluminum box, it emphasizes strength through heavy-duty steel, though this results in added weight that might challenge handling or installation. Its weather-resistant design helps protect contents from the elements, but its bulk could require custom mounting on some vehicles. This product suits those prioritizing robust security and durability over weight savings, but it may not be suitable for users seeking lightweight or easily portable options.
Pros:- Heavy-duty steel construction ensures maximum durability
- Reinforced T-handle with two keys enhances security
- Weatherproof and dust-resistant for outdoor environments
Cons:- Heavy weight complicates handling and installation
- May require custom brackets or mounts for some vehicles
Best for: Professional contractors or fleet operators needing tough, weatherproof storage with a simple locking mechanism
Not ideal for: DIY users or those with limited installation skills, due to weight and potential mounting complexity
- Material:Cold-rolled steel
- Dimensions:36 x 12 x 14 inches
- Locking Mechanism:Reinforced T-handle with two keys
- Weatherproof:Yes
- Application:Trucks, trailers, utility vehicles
Our verdict“Best suited for heavy-duty users who demand tough, weather-resistant steel lockers, accepting installation challenges.”
UWS EC20503 Secure Lock 48-Inch Matte Black Heavy-Wall Aluminum Under Tonneau Cover Tool Box, RigidCore Lid
The UWS EC20503 offers a premium aluminum construction with a low-profile design, making it ideal for those who want secure, under-tonneau storage without adding bulk. Its 48-inch size is larger than some other options, providing ample space while maintaining a sleek look thanks to its matte black finish. The foam-filled RigidCore lid enhances strength and prevents warping, a clear upgrade over thinner, non-insulated lids like that on the UWS EC20501. However, its weight can be significant, and it’s limited to trucks compatible with 48-inch under tonneau widths. This makes it a top pick for users seeking security, durability, and a low profile under their truck covers, but not for those with smaller or incompatible beds.
Pros:- Heavy-duty, extra-thick aluminum construction resists corrosion
- Foam-filled RigidCore lid for added strength and warping resistance
- Secure, pry-resistant locking handles for high security
Cons:- Heavy weight may require assistance for installation
- Limited compatibility with certain truck bed sizes
Best for: Truck owners needing a durable, low-profile toolbox that fits under most tonneau covers and values security
Not ideal for: Buyers with smaller trucks or those lacking compatible tonneau cover sizes
- Height:16-1/2 inches
- Material:Aluminum
- Lid Type:RigidCore foam-filled
- Locking System:Dual-locking handles
- Construction:Welded, extra-thick 0.058″ aluminum
- Made in:USA
Our verdict“An excellent option for those seeking a rugged, secure, and low-profile aluminum toolbox under their tonneau cover.”
UWS EC20501 Secure Lock 48-Inch Heavy-Wall Aluminum Under Tonneau Cover Tool Box, RigidCore Lid
The UWS EC20501 prioritizes lightweight durability with its aluminum build and low-profile design, ideal for maximizing bed space. Its 48-inch size matches the EC20503 but is generally designed for trucks with compatible bed widths. The foam-filled RigidCore lid provides additional strength and warping resistance, while the dual-locking handles enhance security. Compared to steel boxes, this model offers easy handling and corrosion resistance, though it might lack the raw strength for extremely rugged conditions. This product suits users who want a balance of durability, security, and weight savings, but it may fall short for those requiring maximum security or larger dimensions.
Pros:- Corrosion-resistant aluminum construction
- RigidCore foam-filled lid for durability and warping resistance
- Dual-locking handles for enhanced security
Cons:- Heavy packaging may need assistance during delivery
- Limited compatibility with certain tonneau sizes
Best for: Light-duty truck owners needing corrosion-resistant, secure storage that fits under tonneau covers
Not ideal for: Heavy-duty users or those needing larger capacity or steel construction for extreme conditions
- Height:16-1/2 inches
- Material:Aluminum
- Lid Technology:RigidCore foam-filled
- Locking System:Dual-locking handles
- Construction:Welded, 0.058″ aluminum
- Made in:USA
Our verdict“A well-rounded aluminum toolbox for users seeking corrosion resistance, security, and a low profile under tonneau covers.”
FORWODE 36x17x18 Inch Underbody Aluminum Truck Tool Box with Lock & Foldable T-Handle Waterproof
The FORWODE offers a compact yet spacious aluminum storage solution with waterproof features, making it perfect for harsh weather conditions. Its foldable T-handle enhances security and convenience, providing a quick way to lock contents while preventing theft. Compared to larger steel options like the 2 Pack Heavy-Duty Steel Toolbox, this model prioritizes weather resistance and ease of access, though it may have less overall capacity. The lightweight aluminum makes installation easier, but it might not be as durable under extreme impacts. It’s an excellent fit for users who need reliable waterproof storage that’s easy to handle and suitable for various vehicle types, but those with extensive storage needs may find it limiting.
Pros:- Durable, waterproof aluminum construction
- Foldable T-handle for quick locking and theft prevention
- Fits multiple vehicle types, including trailers and RVs
Cons:- May require professional installation for perfect fit
- Limited color options, only available in black
Best for: Outdoor enthusiasts or RV owners needing waterproof, theft-resistant storage for tools and gear
Not ideal for: Heavy-duty users requiring maximum capacity or steel toughness for rugged environments
- Dimensions:36 x 17 x 18 inches
- Material:Aluminum
- Lock Type:Built-in lock
- Handle:Foldable T-handle
- Waterproof:Yes
- Compatibility:Fits various trucks, trailers, RVs
Our verdict“A solid waterproof aluminum box ideal for outdoor or RV use, offering security and ease of access.”
Dee Zee DZ 960D Under Tonneau Storage Drawer
The Dee Zee DZ 960D stands out as the most robust option in this lineup, thanks to its heavy-duty steel construction and a substantial 600-pound weight capacity. Unlike the lighter VEVOR Aluminum Storage Toolbox, which is easier to handle but less durable, this drawer offers a larger 54-inch extension, making access to stored items straightforward even when fully loaded. Its lockable feature enhances security, making it ideal for valuable tools and equipment. However, the installation process is more involved, requiring drilling, and the heavy weight of over 111 pounds can pose challenges for solo setup. Customer reviews are mixed, reflecting that while the build quality impresses many, some find the installation cumbersome. This model makes the most sense for those prioritizing durability, security, and extensive storage capacity over ease of installation.
Pros:- Durable heavy-duty steel construction with rust protection
- Large 54-inch extension for full access to stored items
- Includes five plastic dividers for organized storage
- Lockable for enhanced security
Cons:- Heavy weight makes installation difficult without assistance
- Requires drilling, which can be time-consuming and permanent
Best for: Tradespeople or contractors needing secure, heavy-duty storage for large or valuable equipment, prepared to handle complex installation.
Not ideal for: Homeowners or casual users seeking a lightweight, easy-to-install solution, as the heavy weight and installation complexity may be off-putting.
- Material:Heavy-duty steel
- Finish:Black powder coat
- Length:60 inches
- Inner extension:54 inches
- Weight capacity:600 lbs
- Item weight:111.8 pounds
Our verdict“This drawer is best suited for users who need maximum durability and security, and are ready for a challenging installation process.”
VEVOR Underbody Truck Box, 36″×14″×16″ Aluminum Storage Toolbox with Lock and Keys
The VEVOR Aluminum Storage Toolbox offers a lightweight yet durable alternative to steel options like the Dee Zee drawer. Its aluminum construction provides excellent rust and corrosion resistance, which is a step up from some steel models that may require more maintenance. The waterproof seal and lockable T-handle latch ensure belongings stay dry and secure, making it an ideal choice for those who often tow trailers or transport sensitive items. Compared to the larger and more complex Dee Zee drawer, this box is easier to install and transport, but its smaller capacity and underbody mounting limit its suitability for bulky or high-volume storage needs. It requires careful measurement before purchase to ensure proper fit, and some assembly may be needed. It’s perfect for users prioritizing weight savings, water resistance, and versatile installation options.
Pros:- Lightweight, rust and corrosion-resistant aluminum construction
- Waterproof seal and lockable for secure, dry storage
- Versatile installation options for different vehicle types
- Tough tread pattern for scratch resistance
Cons:- Limited capacity compared to larger steel drawers
- Requires precise measurement to fit properly
- May need assembly for installation
Best for: Owners of trucks, trailers, or campers seeking a secure, waterproof storage solution that is easy to handle and install.
Not ideal for: Users needing extensive storage capacity or heavy-duty construction for demanding industrial use, as its lighter aluminum build offers less overall robustness.
- Material:Aluminum
- Dimensions:36″ L x 14″ W x 16″ H
- Weight:24.7 pounds
- Capacity:50 kg
- Color:Silver
- Style:Rectangular
Our verdict“This aluminum toolbox is ideal for those who need reliable, waterproof storage that’s easy to install and transport, especially in lighter-duty applications.”
How We Picked
Products were evaluated based on build quality, security features, waterproofing, size compatibility, ease of installation, and overall value. We prioritized models with proven durability, locking mechanisms that prevent theft, and materials suited for outdoor conditions. The ranking reflects a balance between affordability and premium features, ensuring options for different budgets and needs. Our selection aims to highlight the best in each category—whether that’s overall performance, value, or specialized features—helping buyers find the best-rated under tonneau truck tool box for their specific application.| rated under tonneau truck tool boxe | Material |
|---|---|
| 2 Pack Underbody Truck Tool Bo | Carbon steel |
| 36-Inch Heavy-Duty Steel Under | Cold-rolled steel |
| UWS EC20503 Secure Lock 48-Inc | Aluminum |
| UWS EC20501 Secure Lock 48-Inc | Aluminum |
| FORWODE 36x17x18 Inch Underbod | Aluminum |
| Dee Zee DZ 960D Under Tonneau | Heavy-duty steel |
| VEVOR Underbody Truck Box | Aluminum |
Factors to Consider When Choosing Rated Under Tonneau Truck Tool Boxes
Choosing the right under tonneau truck tool box involves considering several key factors that influence longevity, security, and usability. Understanding these can help prevent common mistakes like overpaying for features you don’t need or selecting a size incompatible with your truck. Below are the most important considerations to keep in mind when selecting a tool box that truly fits your needs.Material and Durability
Materials like steel and aluminum dominate under tonneau tool boxes. Steel offers superior strength and impact resistance but can be heavier and prone to rust without proper coating. Aluminum, on the other hand, resists corrosion better and often provides a lighter option, though it might be less impact-resistant. Think about your environment—harsh weather or off-road use may favor steel, while corrosion resistance could be more critical for coastal areas. The choice affects not only longevity but also ease of installation and overall weight on your truck.
Security Features
Locking mechanisms are vital for protecting tools from theft. Some models feature T-handle locks with keys, while others incorporate more advanced locking systems or tamper-proof designs. A secure lock isn’t just about preventing theft; it also guards against accidental opening and weather intrusion. Consider whether you need a simple lock or a high-security system, especially if your truck is parked in public areas frequently. Higher security usually comes with a higher price, but it can save money in tool replacement or theft prevention.
Size and Compatibility
The dimensions of the tool box must match your truck’s underbody space and your storage needs. Larger boxes like 48-inch models offer more capacity but may be more difficult to install or fit under certain tonneau covers. Conversely, smaller or more compact options save space but limit storage. Measure your truck’s available space carefully, and consider how much equipment you need to store regularly. Proper sizing ensures easy installation and prevents interference with other truck accessories or covers.
Waterproofing and Weather Resistance
Weatherproof features protect your tools from rain, snow, and humidity. Look for sealed gaskets, high-quality paint or coatings, and materials that resist corrosion. Not all waterproofing is created equal—some models offer better sealing than others, especially in harsh climates. Proper waterproofing extends the lifespan of your tools and prevents rust. Keep in mind that regular maintenance, like lubricating locks and inspecting seals, helps sustain weather resistance over time.
Ease of Installation and Maintenance
Ease of installation varies; some tool boxes come with mounting kits and clear instructions, while others require more complex setup. Consider your DIY skills—if you’re not comfortable with drilling or wiring, look for models that are more straightforward to install. Maintenance involves cleaning, lubricating locks, and inspecting seals. Choosing a design that allows easy access and simple upkeep can save time and effort in the long run, especially if you plan to move or remove the box periodically.
Frequently Asked Questions
Will a larger under tonneau tool box fit under my truck’s tonneau cover?
Size compatibility depends on your truck’s specific model and tonneau cover. It’s essential to measure the available space precisely—taking into account the width, height, and clearance under the cover. Larger boxes, like 48-inch models, offer more storage but may not fit if your truck has a low-profile or tightly fitted cover. Always compare your truck’s measurements with the product dimensions before purchasing to ensure proper fit and easy installation.
Are aluminum tool boxes more secure than steel ones?
Not necessarily. Aluminum tool boxes are often more resistant to corrosion, making them excellent for outdoor use in humid or salty environments. However, steel boxes tend to be heavier and can provide a more impact-resistant barrier, making it harder for thieves to cut through. The security of a tool box mainly depends on the locking mechanism rather than the material alone. For maximum security, choose models with tamper-proof locks regardless of the material.
How do I maintain waterproof features on my underbody tool box?
Proper maintenance involves regularly inspecting seals, gaskets, and hinges for signs of wear or damage. Keep the locking mechanisms lubricated to prevent corrosion and ensure smooth operation. Cleaning out debris and mud that may accumulate around seals helps maintain their effectiveness. Periodic checks and timely replacement of worn seals can extend the waterproof life of your tool box and protect your tools from the elements.
Is it worth paying extra for a lockable aluminum tool box?
Paying more for an aluminum, lockable tool box often translates into better corrosion resistance and a lighter overall weight, which can simplify installation and removal. If security and weather resistance are priorities, the investment might be justified, especially in challenging conditions. However, it’s important to balance cost with features—more expensive models tend to offer advanced locks and better materials, but some mid-range options also provide excellent security and durability at a lower price point.
Can I install an underbody tool box myself, or should I hire a professional?
Many underbody tool boxes are designed for DIY installation, especially those with straightforward mounting kits and clear instructions. Basic tools like drills, wrenches, and levelers are often sufficient if you have some mechanical aptitude. However, if your truck has complex wiring, specialized mounting points, or if you’re unsure about aligning the box properly, hiring a professional can ensure a secure, proper fit. Proper installation is critical to prevent theft, damage, or leaks, so weigh your comfort level accordingly.
Conclusion
For general use, the UWS EC20503 offers a balanced combination of security and weather resistance, making it the best overall choice. Budget-conscious buyers will appreciate the 2 Pack Underbody Truck Tool Box for its durability and waterproof features at a lower price. Those seeking premium quality should consider the UWS EC20503, which provides advanced locking and corrosion resistance. Beginners or casual users might prefer simpler models like the VEVOR Underbody Truck Box for easy installation. For specialized needs, such as maximum security or heavy-duty environments, options like the Dee Zee DZ 960D or the FORWODE Aluminum Box stand out. Ultimately, your choice depends on your budget, environment, and security priorities.
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