A Simple Guide for Truckers, Fleet Owners & Utility Trailer Operators in the U.S.
Choosing a truck toolbox isn’t just about finding a place to store tools—it’s about picking the right size and mounting style to match how you work, what you carry, and how often you’re on the road. Whether you’re driving a flatbed, a pickup, or a trailer rig, this guide will help you get it right the first time.
1. Choosing the Right Toolbox Size
The first question to answer:
What are you hauling, and how much space can you give up?
Small Toolboxes (24″–36″)
- Great for pickups or utility trailers
- Fits essential tools, bungee cords, and a ratchet strap kit
- Ideal for light-duty or home hauling
Medium Toolboxes (36″–48″)
- Most popular size for fleet trucks
- Fits mid-size tool collections, safety gear, and extras
- Works well on side rails or underbeds
Large Toolboxes (48″–72″+)
- Designed for commercial rigs or trailers
- Can store power tools, chains, jacks, straps, PPE
- Best for construction crews, OTR drivers, or mobile workshops
Pro Tip: Don’t just measure the toolbox. Measure the space on your truck where you plan to mount it. Leave room for tailgates, fuel tanks, or hitch access.
2. Toolbox Mounting Styles: What Works Best for Your Setup?
There’s no one-size-fits-all. The right mounting style depends on your truck layout and daily access needs.
Crossover (Saddle) Toolboxes
- Mounts behind the cab, across the bed
- Leaves space under the box
- Good for pickup trucks and basic tools
Best For: Mechanics, light contractors, general hauling
Side-Mount (Topside) Toolboxes
- Bolts to the top rail of your truck or trailer bed
- Quick side-access while standing on the ground
- Available in multiple lengths
Best For: Landscapers, delivery drivers, mobile repair
Underbody / Underbed Toolboxes
- Mounts beneath a flatbed or trailer
- Keeps tools dry, hidden, and out of the way
- Must be installed carefully to avoid road clearance issues
Best For: Flatbed fleets, dump trailers, enclosed cargo haulers
Chest Style Toolboxes
- Sits inside the truck bed or trailer
- Doesn’t block rear window
- Easy to remove when needed
Best For: DIY users, weekend haulers, part-time fleet drivers
Trailer Tongue Boxes
- Mounts on A-frame of utility trailer
- Perfect for towing straps, chains, locks
- Compact and secure
Best For: Homeowners, small business haulers, boat or ATV trailers
3. Bonus Tips for Better Toolbox Choices
Go Weatherproof: Look for rubber gaskets, rust-resistant coating, and sealed latches
Pick a Lockable Model: Security matters on job sites and overnight hauls
Aluminum vs. Steel?
- Aluminum = lightweight and rust-free
- Steel = more secure and dent-resistant
Want to compare material types? Read: Aluminum vs. Steel Toolboxes: Which Is Best?
Final Thoughts: Match Toolbox to Job
Don’t buy the biggest box “just because.”
Instead, think about:
- How often you access your tools
- Where you park and drive
- Whether you’re hauling tools, tarp straps, or power equipment
Trion Products Has Your Toolbox Covered
From compact chest toolboxes to full-length underbody storage, TrionProducts.com offers USA-tested designs for every kind of truck and trailer.
High-grade aluminum
Smart mounts for easy installation
Weather-sealed and ready for the road
Check out our Toolbox Collection here » TrionProducts.com/toolbox