24 Inch Underbody Truck Box Steel Storage Tool Box - Secure

In this review of the 24 Inch Underbody Truck Box from COOLBAG, the bottom line is simple: this is a practical, heavy-duty steel toolbox for truck owners who need organized, weather-resistant storage without paying for premium trim options. It suits pickup, trailer or RV use where a compact but roomy underbody or bed-mounted box is required. The single biggest reason to buy is the combination of a sturdy steel build with a weather-resistant seal and an internal keyed lock that keeps tools and accessories protected on the road.

Key Features

• Overall dimensions: The 24in x 18in x 18in size fits most truck underbody locations and provides usable capacity for power tool batteries and hand tools.
• Sturdy steel construction: A powder-coated steel shell improves durability for heavy-duty use and helps resist dents and everyday wear.
• Weather-resistant seal: The door has a rubber seal that helps keep contents dry when exposed to rain, splashes or damp environments.
• Built-in lock and keys: The integrated lock with supplied keys offers basic theft deterrence and prevents accidental opening while driving.
• Versatile use: The box is suitable for camping, fishing, construction or general outdoor storage, making it useful beyond just truck tool storage.

Who It's For

This box is aimed at truck owners, RV and trailer users who need a dedicated, secure place for tools and equipment that will be exposed to the elements. It works well for contractors who want a simple underbody or bed-mount solution and for outdoor enthusiasts who need a waterproof compartment for gear.

Those who need high-end security hardware, custom-fit compartments, or corrosion-resistant marine-grade alloy should look elsewhere; this model focuses on solid steel construction and practicality rather than premium locking systems or specialty materials.

Pros & Cons

Pros

• Good value for a heavy-duty powder-coated steel tool box that fits common underbody locations.
• Weather-resistant rubber seal keeps tools drier than an open compartment would.
• Built-in lock and supplied keys add a layer of security and prevent accidental openings.
• Reasonable weight and ease of installation make it practical for most users.

Cons

• Lock and hinge quality received mixed feedback, so expect variable long-term reliability in heavy daily use.
• Steel construction is durable but not as corrosion-resistant as stainless or aluminum options in salty environments.

Specifications

Brand	COOLBAG
Overall dimensions	24in x 18in x 18in
Material	Powder-coated steel
Seal	Weather-resistant rubber door seal
Security	In-built lock with supplied keys
Typical fit	Underbody, truck bed, RV or trailer storage

Our Verdict

The 24 Inch Underbody Truck Box is a sensible purchase for truck and RV owners who need a durable, weatherproof and affordable storage solution. It delivers solid construction and basic security at a fair price, making it good value for those who want reliable organized storage without specialty finishes or premium locks.

Frequently Asked Questions

Will this box fit most truck underbody mounts?
Yes, the 24in x 18in x 18in dimensions are sized to fit most common underbody and bed locations, but measure your space before buying.

Is the box waterproof?
The door includes a weather-resistant rubber seal that helps keep contents dry, though it is not marketed as a fully submersible container.

Does the lock come with keys?
Yes, the toolbox includes an in-built lock and supplied keys for basic security and to prevent accidental openings.