39 in Lx15 Wx14 H Aluminum Tool Box - Heavy Duty Truck Bed Storage

Our review of the 39 in Lx15 Wx14 H Aluminum Tool Box finds it best for pickup and trailer owners who need a large, weatherproof storage chest without adding excessive weight. The single biggest reason to buy is the unusually large 35 gallon interior in a compact 39 in length, which transforms how much gear fits across a standard truck bed. Construction choices like 17-gauge aluminum, a five-stripe tread pattern and a gas strut for a 90 opening make it feel like a practical, long-term storage upgrade rather than a disposable accessory.

Key Features

• Large capacity: The 35 gallon interior gives significantly more room than typical 30 in boxes, so users can carry buckets, fire extinguisher canisters and larger tools without crowding.
• Heavy-duty construction: Thick 17-gauge aluminum and a five-stripe tread pattern provide abrasion resistance and a sturdier shell than thinner boxes on the market.
• All-weather protection: Welded one-piece tub design and double-sided coating keep contents protected from rain, dust and UV exposure.
• Convenient access: A 100N high-pressure gas strut holds the lid open to 90 for clear visibility and easier organization.
• Secure closure: Stainless steel latch and included 2 PCS keys provide a basic level of theft deterrence and closure security.
• Portable design: Side handles and reinforcement plates make it easier to move and mount the box across trailers, trucks or RVs.

Who It's For

This tool box is suited to truck owners, contractors and RV users who need a roomy, lightweight storage solution that resists weather and corrosion while keeping weight down. It is particularly useful when users want to keep larger items like buckets, warning signs or bulky repair tools organized and accessible along the top of a bed or trailer tongue.

Shoppers who need an ultra-high-security vault or those requiring internal compartments and tool organization trays may want to look elsewhere or add aftermarket organizers, since the box is a single large tub designed for volume and weather resistance rather than a complex internal tool chest.

Pros & Cons

Pros

• Generous 35 gallon capacity fits more and larger items than similar 30 in boxes.
• 17-gauge aluminum with tread pattern and double-sided coating improves durability and corrosion resistance.
• Gas strut and side handles make accessing and carrying the box simpler and safer.
• Welded one-piece tub and UV-proof finish protect contents in all-weather conditions.

Cons

• Some users report mixed opinions on latch and lock strength, so heavy-duty security may require an upgrade.
• A single large cavity lacks built-in internal organizers for small parts without added organizers.

Specifications

Our Verdict

This 39 in aluminum tool box delivers outstanding volume and weather resistance for its size, making it a good value for truck, trailer and RV owners who prioritize capacity and corrosion protection without a heavy weight penalty. It is a practical upgrade for carrying larger gear, though buyers who need high-security locks or internal trays should plan modest aftermarket additions.

Frequently Asked Questions

Does it fit standard pickup beds?
Yes, the L39 in length is designed to sit across common truck beds and trailers while leaving room for tailgate access on many models.

Is the box water resistant?
The welded one-piece tub and double-sided coating provide strong water and dust resistance for all-weather use.

Are keys included?
Yes, the unit ships with a stainless steel safety lock and 2 PCS keys for basic security.