A behind cab tool box adds organized storage for tools and gear, but the right choice depends on available space, mounting location, and vehicle fit. The VEVOR 48-inch aluminum box is best for buyers needing a wide storage chest; the 39-inch aluminum model suits tighter spaces. The VEVOR steel tongue boxes are designed for trailer storage, while the Silverado and Sierra under-seat option is a cabin-storage alternative. Confirm dimensions and mounting requirements before buying.
| Product | Best For | Key Detail |
|---|---|---|
| VEVOR Aluminum, 48 x 15 x 15 in. | High-volume truck-bed storage | Aluminum construction and sealed lid |
| VEVOR Steel Tongue Box, 36 x 12 x 12 in. | Trailer storage | Lock and keys; weather-resistant seal |
| VEVOR Upgraded-Lock Steel Tongue Box | Trailer gear organization | Cold-rolled steel construction |
| Silverado and Sierra Under-Seat Storage | Cabin storage | Listed for 2019–2026 models |
| VEVOR Aluminum, 39 x 13 x 10 in. | More compact truck-bed storage | Aluminum construction and sealed lid |
VEVOR 48-Inch Aluminum Truck Bed Box
Best for: Truck owners who need a wide storage box for tools, maintenance supplies, or other bulky gear. Its listed dimensions are 48 x 15 x 15 inches, making it the larger of the two aluminum truck-bed options in this guide.
The box uses aluminum alloy with a diamond-tread pattern and a double-sided coating intended to resist rust, corrosion, and abrasion. An overhanging door and tight seal are designed to limit water entry. Side handles and lock keys are included according to the product name.
Why it was selected: Its wide footprint and stated bulk-storage capacity make it a practical candidate for behind-cab or other truck-bed placement when the truck’s dimensions allow. Limitation: Measure the intended area carefully; the 48-inch width and 15-inch height may not suit every bed or mounting position.
VEVOR 36-Inch Steel Trailer Tongue Box
Best for: Trailer and RV owners seeking a dedicated place for batteries, tools, and outdoor equipment. This steel box measures 36 x 12 x 12 inches and is described as suitable for various flat trailers and RVs.
Its carbon-steel construction has a double-sided surface treatment intended to resist rust and wear. The overlapping door and extra-wide sealing strip are designed to help keep rain and snow from entering. A lock and keys are listed in the product name.
Why it was selected: It offers a compact, enclosed storage format for trailer-related gear rather than a conventional truck-bed chest. Limitation: This is a trailer tongue box, so check the trailer’s available mounting area and clearance rather than assuming it fits behind a pickup cab.
VEVOR Upgraded-Lock Steel Tongue Box
Best for: Buyers who want a steel trailer storage box with an upgraded lock version. The listed interior dimensions are approximately 36 x 12.3 x 12 inches, with room for batteries, tools, and outdoor gear.
The box is made from thick cold-rolled steel, which the product description says provides impact resistance and rust and wear protection. Overlapping doors and wide sealing strips are intended to help block water intrusion. The product listing identifies this as an upgraded-lock version.
Why it was selected: Its stated steel construction and weather-resistant door design make it a relevant alternative to the other trailer tongue box. Limitation: The supplied details do not specify the lock mechanism or mounting hardware, so verify those details and the fit for your trailer before ordering.
Silverado and Sierra Under-Seat Storage
Best for: Owners of the listed 2019–2026 Chevrolet Silverado 1500 and GMC Sierra 1500 models who prefer storage inside the cab instead of a separate truck-bed box.
Why it was selected: It addresses the same organization need while using under-seat space, making it an alternative when an exterior box is not the preferred solution. The supplied product information names the compatible model years but does not provide material, capacity, or installation details.
Limitation: This is not a behind-cab exterior tool box. Confirm the exact vehicle configuration and product fitment information before purchase.
VEVOR 39-Inch Aluminum Truck Bed Box
Best for: Buyers who want an aluminum truck-bed chest but have less room than the 48-inch model requires. Its dimensions are 39 x 13 x 10 inches.
The aluminum alloy body has a diamond-tread pattern and double-sided coating intended to resist corrosion, rust, and abrasion. The overhanging lid and tight seal are designed to help prevent water from reaching stored items. The product name also lists a side handle and lock keys.
Why it was selected: It offers a smaller footprint than the 48-inch option while retaining the listed aluminum construction and sealed-lid design. Limitation: Its smaller dimensions mean less available storage space; compare the interior needs of your tools and supplies before choosing it.
Buying Guide: How to Choose a Behind Cab Tool Box
What dimensions should you measure?
Measure the intended mounting area before comparing product sizes. Check width, height, and depth, then account for lid movement, handles, and access around the box. A nominal 48-inch box needs more horizontal room than a 39-inch model. For trailer tongue boxes, measure the tongue area and check that the box will not interfere with trailer components.
Should you choose aluminum or steel?
The two truck-bed models here use aluminum alloy, while the trailer tongue boxes use steel. Compare the stated construction, dimensions, and intended placement rather than assuming one material is best for every use. The listings describe coatings or surface treatments intended to resist corrosion and wear, but do not provide a common test standard for direct durability comparisons.
How important is weather protection?
All three VEVOR exterior boxes describe overlapping or overhanging doors and seals intended to reduce water entry. Treat these descriptions as design features, not a guarantee of waterproof performance. Check the lid closure, seal condition, and installation instructions, and avoid storing items that cannot tolerate moisture without additional protection.
Do you need a lockable exterior box or cabin storage?
Choose a lockable exterior chest when you need a separate place for gear in the truck bed or on a trailer. The product names identify locks and keys for the aluminum box and first steel tongue box, and an upgraded-lock version for the other steel box. Choose under-seat storage instead if you own a listed Silverado or Sierra and want to use cabin space; verify fitment details first.
Frequently Asked Questions
What size behind cab tool box should I choose?
Choose a size that fits the measured space and accommodates your largest items. The listed truck-bed options are 48 x 15 x 15 inches and 39 x 13 x 10 inches.
Are trailer tongue boxes the same as behind cab truck boxes?
No. Trailer tongue boxes are intended for trailer or RV storage, while a truck-bed box is intended for a truck bed. Check placement and mounting fit before buying.
Are these boxes described as weather resistant?
The exterior VEVOR boxes feature overlapping or overhanging doors and seals intended to limit water entry. The listings do not establish that the boxes are fully waterproof.
Can under-seat storage replace a truck-bed tool box?
It can serve as an alternative for smaller items if the listed vehicle fitment applies. It is an interior storage option, not an exterior tool chest.
What should I verify before ordering?
Confirm dimensions, intended mounting location, vehicle or trailer fit, lid clearance, and included locking or installation details. Check the product listing for information not provided in the available specifications.