72 x 21 x 19 in Black Aluminum 5 Bar Tread Truck Tool Box - Underbody

In this review of the 72 x 21 x 19 in Black Aluminum 5 Bar Tread Truck Tool Box, the bottom line is simple: it is a practical underbody storage solution for truck, trailer, and RV owners who need organized, weather-resistant space without adding significant weight. The reviewer found the box best for those who want a large-capacity, secure toolbox that mounts under the bed and keeps tools accessible. The built-in lock and drop-down door deliver straightforward security and access, while the powdercoated textured aluminum keeps the box light and corrosion-resistant for long-term use.

Key Features

• Rigid Construction: Heavy duty textured aluminum and a 5 bar tread pattern strengthen the body so it resists denting while remaining lightweight for vehicle use.
• Weather Protection: An over-hanging lid and sealing ring design help keep rain and road spray out of the interior so stored items stay cleaner and drier.
• Secure Storage: A built-in stainless steel security lock with two keys secures contents and the drop-down door gives full access for loading and unloading.
• Large Capacity: The 72 in by 21 in by 19 in interior profile provides generous storage for hand tools, power tools, straps, and work gear across trucks and trailers.
• Versatile Mounting: Sized and shaped for underbed mounting on trucks, trailers, RVs and flatbeds so it preserves bed space while adding organized storage.
• Low Weight Impact: Powdercoated aluminum construction reduces added weight compared with steel alternatives while retaining corrosion resistance.

Who It's For

This toolbox is aimed at pickup and flatbed owners, RV owners, and tradespeople who need a secure, weather-resistant underbody storage box with large capacity and easy access. It is especially useful for those who want to free up the truck bed while keeping tools and straps organized and locked away.

Shoppers who require a heavy-gauge steel ballistic box or custom-fit, bed-specific molded organizers should look elsewhere; this aluminum box balances weight savings and corrosion resistance over extreme heavy-duty impact protection. Also, those wanting internal compartments or foam organizers will need to add inserts or dividers separately.

Pros & Cons

Pros

• Lightweight aluminum construction provides corrosion resistance without a big weight penalty.
• Large internal volume and full drop-down door make loading and accessing gear straightforward.
• Built-in lock and two keys offer solid theft deterrence and secure storage on the road.
• Powdercoated textured finish and 5 bar tread pattern improve durability and hide wear.

Cons

• Build quality received mixed feedback from some users who expected heavier, thicker metal for extreme worksite use.
• Water resistance is good but not guaranteed in all conditions, so additional sealing or placement may be needed for very wet environments.

Specifications

Overall Size	72 in L x 21 in W x 19 in H
Material	Powdercoated black aluminum with 5 bar tread
Finish	Textured powdercoat, black
Lock	Built-in stainless steel security lock with 2 keys
Design Features	Over-hanging lid, sealing ring, drop-down door
Typical Uses	Truck, trailer, RV, flatbed, garage storage

Our Verdict

The 72 x 21 x 19 in aluminum underbody toolbox is a practical, value-oriented choice for truck and RV owners who need large, secure storage without adding a lot of weight. It combines a weather-conscious lid design, a useful drop-down door, and a built-in lock to meet the needs of most tradespeople and outdoor users, though buyers seeking the absolute heaviest-duty steel box should consider that tradeoff.

Frequently Asked Questions

Will this box fit under most pickup beds?
It is designed as an underbody toolbox with a 72 in length and should fit many full-size and some mid-size pickup frames, but buyers should measure their vehicle clearance and mounting points.

Is the box watertight?
The over-hanging lid and sealing ring provide good protection against rain and road spray, but it is not marketed as fully watertight for submerged or extreme flood conditions.

Does it come with keys?
Yes, the toolbox includes a built-in lock and two keys for secure access.