Is your truck bed a messy jungle of tools and gear? You want everything secure and out of sight, but finding the perfect toolbox that fits snugly under your tonneau cover feels like a puzzle. Many truck owners face this exact headache. Standard toolboxes often sit too high, leaving you with a choice: sacrifice bed space or risk your tools getting wet and stolen.
Choosing the right under-cover toolbox means balancing capacity, security, and fit. Too bulky, and your tonneau cover won’t close properly. Too flimsy, and your expensive gear is vulnerable. It’s frustrating when you need reliable storage that works seamlessly with your existing setup. You need a solution that maximizes space without causing installation headaches.
This guide cuts through the confusion. We will show you exactly what features matter most in an under-tonneau toolbox. You will learn about low-profile designs, locking mechanisms, and the best materials for long-lasting security. Prepare to transform your truck bed from chaotic to perfectly organized.
Top Tool Box For Under Tonneau Cover Recommendations
- EXPANDED STORAGE | This versatile storage box can be used as a mounted toolbox, cooler, or container. Its functional design allows for placement anywhere along the truck bed. The elevated mounting system allows for the use of the entire truck bed floor
- Made in the USA with Global Materials
- STRONG & SECURE | The durable construction of this storage box allows it to hold up to 200 lbs of cargo. A lock and key mechanism on top of the toolbox paired with a truck bed cover installed above it ensures that your valuables stay safe
- EASY CLAMP INSTALLATION | This truck bed box is compatible with most full-sized trucks. For most models, the box clamps to the bed’s side rails underneath your truck bed cover.
- WE'VE GOT YOU COVERED | TonneauMate is backed by a 2-year, no hassle guarantee. We are committed to providing you the best service at all times. Simply call our team. All TruXedo products are proudly made in the USA with globally sourced materials
- UNIQUE DESIGN: Sliding shelf design creates extra space for storing small tools, screws, and other items so they can be easily found and improve work efficiency
- DURABLE: This truck toolbox is constructed with high-density aluminum and non-slip surface while being highly resistant to oxidation, ensuring it maintains an attractive appearance and stable performance in harsh environments over time
- SAFETY & CONVENIENCE: Sturdy lock keeps your tools safe and available, while the stainless steel handles on both sides allow for easy handling and removal from vehicle
- WEATHER PROTECTION: This toolbox is designed with sealing strips and professional powder coating provides effective water and rust resistance, keeping tools dry and safe from wet environments
- VERSATILITY: The toolbox features a wide range of applications such as being used for pickup trucks, trailers, RVs, and warehouses; Improve your storage game with this toolbox
- TONNEAU-COMPATIBLE. This under tonneau cover tool box measures 16-1/2 inches high and has an offset lid to conveniently fit under most truck bed tonneau covers and maintain full functionality
- RIGIDCORE LID. This under tonneau tool box is built for maximum lid strength and security with patented RigidCore technology. The lid is filled with a solid foam that maximizes structural integrity and helps prevent binding
- EXTRA-THICK ALUMINUM. UWS aluminum truck tool boxes for under tonneau cover are constructed with thicker aluminum compared to most aluminum tool boxes to provide superior strength. This matte black truck tool box features a one-piece tub
- SECURE LOCK HANDLES. This under tonneau cover tool box is equipped with easy-to-operate, dual-locking twist handles that can be locked on either side of the truck. The handles are wide-spread for easier access from the sides of the truck
- EASY TO INSTALL. UWS pickup truck tool boxes are available in several different sizes and styles to accommodate each unique truck and preference
- Dimensions: The truck tool box measures 48"(L) x 15"(W) x 15"(H). We offer a variety of sizes to choose from, so please purchase based on the actual storage space in your car to ensure that the toolbox is right for you.
- Durable: This all-welded aluminum toolbox is designed to be lightweight and durable, making it easy to carry and store. Its diamond plate can increase grip and prevent slipping.
- Organized Tool Storage: The truck tool boxes for bed of truck offer plenty of storage space for your tools and equipment, allowing you to say goodbye to clutter and disarray, and keep everything neatly organized.
- Design Features: With handles on both sides, this trailer tool box offers enhanced portability. It also comes equipped with a lock and keys for added security.
- Versatility in Utility: Whether the bed of a truck, the tongue of a trailer, or placed in an outdoor environment, the truck bed toolboxes adapt effortlessly to various settings. Its versatility allows for convenient placement or secure installation wherever required.
- Enhanced Security: Keep your equipment secure with VEVOR's double-layered security system. Our innovative lockable box and unpickable combination padlock provide infallible protection against theft and tampering.
- Unmatched Toughness: Crafted from high-quality ABS composite material, the VEVOR truck bed storage box combines lightweight design with rigidness and durability. It withstands strong wind, water, dust, and sun exposure, while its temperature resistance range (-68℉ to +158℉ / -20℃ to +70℃) ensures reliability in various conditions. Easy to clean and maintain!
- Ultimate Accessibility: Mount the truck bed box on either side of the bed rail and experience instant access by simply pulling the latch to make it pivot 180 degrees. When not in use, fold it up to preserve precious cargo space. It remains secure even during high-speed driving.
- Space-Saving Design: Maximize bed organization by storing up to 75 pounds of gear in the wheel well truck box. With a spacious storage capacity of 6.6 Gal/25 L, you can easily organize snacks, tools, gloves, bottled drinks, and more. Multiple compartments simplify organization.
- Superior Compatibility: Designed for Ford F-150 2015-2021 Driver Side (Left), the wheel well tool case maintains a 3" clearance and works seamlessly with almost all tonneau covers. The box can be quickly installed using eyelets for secure attachment to the bed. Engineered to meet or exceed OEM equivalents, ensuring a perfect fit.
- Last A Lifetime: VEVOR truck tool box is constructed from lightweight yet durable aluminum alloy, featuring a diamond tread pattern and double-sided power coating process. This design helps to prevent rust, corrosion, and abrasion, ensuring long-lasting use for several years. Additionally, the tool box is equipped with upgraded corners to secure the packaging and prevent any damage or deformation during transportation.
- Bulk-storage Toolbox: This spacious toolbox measures 48 x 15 x 15 inches, providing plenty of room for buckets, maintenance tools, fire extinguishing canisters, warning signs, and other items in your truck. It's versatile and can be used in pickups, trucks, trailers, RVs, and even at home. You no longer need to worry about misplacing small objects with this toolbox.
- Nothing Is Getting In: Our truck toolbox is a must-have choice for your vehicle. It comes with an overhanging door that features a tight seal to prevent water from seeping in. This ensures that your box items remain dry and tidy, even in harsh rainy or snowy conditions.
- Safety Comes First: Equipped with stainless steel locking mechanism and 2 exclusive keys, providing effective protection against theft. Additionally, its built-in design helps to reduce impact and scratches during driving, ensuring the longevity of your toolbox.
- Lift with Ease: Features wider carrying handles on both sides, making the tool box is easy to grip even with gloves on. Men with larger hands will find it comfortable to carry without feeling crowded. Moreover, it comes with a gas strut that assists in opening the lid up to 110°, providing full access to all contents within the toolbox.
- DURABLE POLYETHYLENE CONSTRUCTION: Lightweight yet rugged high-density ribbed polyethylene resists dents, corrosion, and harsh environments for long-lasting use
- DOUBLE-WALL LID FOR SECURITY: Molded lid with reinforced double-wall design keeps contents protected and prevents warping, cracking, or easy access
- LOCK-READY ZINC-PLATED HINGE: Built-in hasp fits standard padlocks or combination locks, adding theft protection with a rust-resistant design
- MULTI-PURPOSE OUTDOOR USE: Ideal for trailers, truck beds, docks, patios, and decks — a secure solution for storing tools, gear, or outdoor equipment
- PROUDLY MADE IN THE USA: Quality you can trust, built with American craftsmanship for truck upfitters, contractors, and serious outdoor storage needs
- Sliding Shelf Design: This unique design creates extra space for storing small tools, screws, and other items so they can be easily found and improve work efficiency
- Durability with Heavy Duty Aluminum: This truck toolbox is constructed with high-density aluminum and non-slip surface while being highly-resistant to oxidation, ensuring it maintains an attractive appearance and stable performance in harsh environments over time
- Safety & Convenience: Sturdy lock keeps your tools safe and available, while the stainless steel handles on both sides allow for easy handling and removal from vehicle
- Weather Protection: This toolbox is designed with sealing strips and professional powder coating provides effective water and rust resistance, keeping tools dry and safe from wet environments
- Versatility: Overall size: 49 "X15 "X15".The toolbox features a wide range of applications such as being used for pickup trucks, trailers, RVs, and warehouses; Improve your storage game with this toolbox
Your Guide to the Best Tool Box Under a Tonneau Cover
Do you own a pickup truck? Do you need a safe place for your tools? A tool box that fits under your tonneau cover is a great solution. This guide helps you pick the right one. It keeps your gear safe and dry while your truck bed stays mostly open.
Key Features to Look For
When shopping, look closely at these important parts. They make a big difference in how well the box works for you.
Size and Fit
- Bed Dimensions: Measure the space between your wheel wells. This is the narrowest spot. Your box must fit here.
- Height Clearance: Check the distance between the truck bed floor and your tonneau cover when it is closed. You need enough room for the box to sit flat.
- Compatibility: Make sure the box works with your specific tonneau cover style (e.g., tri-fold, rolling).
Security and Access
- Locking Mechanism: Strong, weather-resistant locks are vital. Keyed locks offer good security.
- Lid Opening: Does the lid open easily, even when leaning over the side of the truck? Some lids lift fully, others slide or swing.
Organization
- Internal Trays: Look for removable trays or dividers. These help keep small parts from mixing together.
- Usable Space: Ensure the box holds what you need without wasting too much space.
Important Materials for Durability
The material of your truck tool box affects how long it lasts and how much it protects your tools.
Metal Options
- Aluminum: This is very popular. Aluminum is light, so it does not add much weight to your truck. It resists rust well. Boxes made from thick aluminum often last longer.
- Steel: Steel boxes are very strong. They resist dents better than aluminum. However, steel can rust if the paint chips off.
Plastic Options
- High-Density Polyethylene (HDPE): This heavy-duty plastic is tough and completely rust-proof. It is a good choice if you live somewhere rainy or snowy.
Factors That Improve or Reduce Quality
Small details often show the overall quality of the tool box.
Quality Boosters
- Weather Seals: Thick rubber gaskets around the lid keep rain and dust out. This is crucial for protecting electronics or sensitive tools.
- Sturdy Hinges: Heavy-duty, corrosion-resistant hinges handle frequent opening and closing better.
- Finish/Coating: Powder-coated finishes on metal boxes add a strong layer of protection against scratches and weather.
Quality Reducers (Watch Out For)
- Thin Metal: If the metal feels flimsy when you push on it, the box might dent easily.
- Poor Welds: Look for smooth, clean joints. Messy or incomplete welds weaken the structure.
- Flimsy Latches: Cheap plastic latches break quickly when exposed to sun and cold.
User Experience and Use Cases
Think about how you will actually use the box every day.
Daily Use
If you grab tools often, you want easy access. Sliding or low-profile boxes let you reach items without stretching too much. A good gas strut (a small shock absorber) helps lift the heavy lid smoothly.
Security Needs
If you store expensive power tools, prioritize thick metal and secure, recessed locks. If you only store tie-downs or basic gear, a lighter plastic box might be fine.
Aesthetics
Because the box sits under the cover, it is mostly hidden. However, some people still prefer a matching finish (like a black texture) that looks good if the cover is partially rolled up.
10 Frequently Asked Questions (FAQ) About Under-Cover Tool Boxes
Q: Will a tool box stop my tonneau cover from closing?
A: No, not if you buy the right size. You must measure the height between your bed floor and the cover. Always buy a box shorter than that measurement.
Q: Are these boxes hard to install?
A: Most are designed for easy DIY installation. They usually clamp onto the truck bed rails. Detailed instructions are always included.
Q: Can I still use the tie-down hooks with a tool box installed?
A: Sometimes. Check the box design. Some lower-profile boxes leave the factory tie-down points usable. Others might block them.
Q: Do metal boxes get too hot in the sun?
A: Yes, metal heats up. If you store sensitive items like spray paints or batteries, a plastic box or a metal box with good insulation is better.
Q: What is the main difference between a cross-bed box and a side-mount box?
A: A cross-bed box sits across the entire width of the bed, right behind the cab. A side-mount box runs along one side of the bed, leaving more open space in the middle.
Q: How does the rain get in if the box locks?
A: Quality boxes use continuous rubber weather stripping around the lid opening. This seal prevents most water from entering, even in heavy rain.
Q: Are tool boxes heavy when empty?
A: Aluminum boxes are relatively light. Heavy-duty steel boxes can weigh 50 to 100 pounds before you put anything inside them.
Q: Can I easily remove an under-cover tool box if I need the full bed space?
A: Most clamp-in boxes are removable. You unbolt the clamps holding the box to the rails. It usually takes 15 to 30 minutes to take one out.
Q: What is the typical warranty period for a good tool box?
A: Most reputable brands offer a limited lifetime warranty on the box structure and a shorter warranty (1-3 years) on the locks and hardware.
Q: Should I get a diamond plate finish or a smooth finish?
A: Diamond plate (textured) looks rugged and hides small scratches well. A smooth finish looks cleaner and is easier to wipe down.