$247.95 - $390.29
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Universal Fit
Fitment Notes:
  • Not Vehicle Specific
  • Uses DB-2502 mounting kit (sold separately)
  • Drilling is required
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Product Details

Dee Zee products

Universal Single Door Underbody Tool Box by Dee Zee®. Material: Diamond-Tread Aluminum. Add lockable storage capacity to the underside of your flatbed or trailer with one or more under bed tool boxes from Dee Zee. High-grade aluminum with a textured diamond tread pattern is polished to perfection, then further protected with an outer layer of clear powder coat to resist scratches, chips, and discolorations. Box features stainless steel latch and lock cylinder for the front-opening door and a 1-piece rubber gasket to keep the elements out. Mounting requires drilling and a bracket piece that is sold separately.


  • Uses DB-2502 mounting kit (sold separately)
  • Drilling is required


  • Crafted from thicker commercial-grade .090 aluminum
  • Textured diamond-tread pattern is polished to a brilliant shine then finished with clear powder coat for protection against chips and scratches
  • Release handle and lock cylinder are non-corrosive stainless steel
  • Access from the front is easy with drop-down front doors
  • Doors feature flexible additional support on each side when in the open position
  • Durable neoprene rubber gasket seal effectively keeps moisture and the elements out
  • Mounting requires drilling and bracket piece sold separately
  • Limited Lifetime warranty on aluminum, 1-year warranty on outer protective finish
  • Proudly manufactured in the United States

If you’ve got open areas underneath your trailer, flatbed, or commercial box truck and no room inside your cab to store tools and necessary items, Dee Zee helps you put wasted space to good use with lockable boxes that mount anywhere you need them on the underside of your truck. They’re available in multiple sizes from narrow to double-width, and whichever you choose you’ll get a sturdy door that opens from the front along with a stainless steel handle and lock cylinder. Combined with textured diamond tread aluminum construction, all areas of the box will remain impervious to corrosion – even if things should become dented, scraped, or punctured. With mounting brackets that can be used on a variety of surfaces, it’s easy to install these boxes on the passenger side if roadside safety is a priority, near the back for convenient proximity to trailers, or right next to the cab if needs dictate.

Because Dee Zee believes an aluminum tool box built to last a long time should also continue to look good and resist the hard knocks that can occur from an under bed location, heavier-grade .090 aluminum construction is used. Outer surfaces are finished with a protective layer of clear powder coat to guard against stone hits and abrasions that are hard to avoid in the real world. The Universal Brite Diamond-Tread Aluminum Underbed Box is convenient to use. Instead of folding hinges that can bind or get in the way, an integrated 1-piece hinge spans the entire width of the lid to make opening and closing effortless. Plus, additional built-in supports hold the lid in securely in place horizontally when opened so nothing becomes bent or misaligned. And when the lid is shut, it will stay shut tightly because of an effective gasket that seals moisture out while it quells rattles and vibration. Dee Zee proudly manufactures the Universal Brite Diamond-Tread Aluminum Underbed Box in the United States and backs it with a limited lifetime warranty on the aluminum construction against manufacturing defects and corrosion.

Since 1977, Iowa-based Dee Zee® has sought to create products and accessories for trucks and SUVs with class-leading levels of style, quality, and longevity. Their success and growth in the marketplace has always been fueled by listening to what customers want, then building the things competitors did not offer. Dee Zee believes being environmentally aware is extremely important and views efficient manufacturing to minimize pollution and waste as a corporate responsibility. That philosophy goes hand in hand with fundamental beliefs that a product which effectively resists corrosion represents a better value for the customer – giving it a longer useful lifespan instead of becoming more junk in a landfill. CARiD is proud to offer the Dee Zee product you’ve seen on this page as well as the company’s complete lineup of running boards, grille guards, tool boxes, bed protectors, mud flaps, liquid transfer tanks, cargo carriers, and much more.

Warranty Information

Dee Zee, Inc. guarantees the original purchaser a limited lifetime warranty against manufacturer defects in materials, workmanship, and design under normal use, excluding damage resulting from road hazards such as gravel or other debris, product misuse, improper installation, impairments from accidents, product modifications, improper repairs, spills, vandalism, product neglect, or acts of God.

This warranty applies only to the original purchaser of new product(s) and is limited to the replacement of genuine Dee Zee products. Modification of any kind to Dee Zee products voids all warranty coverage. Warranty does not include electrical components, installation, cost of removal, labor, transportation costs, loss of use, inconvenience, or consequential damages.

Wear items such as shocks, latches, keys, hinges, mud flaps, step pads, end caps, seals, etc. have a 1-year warranty. Replacements of these items are non-returnable non-refundable items. This warranty applies only to new products and is limited to the repair or replacement of genuine Dee Zee products. Warranty does not include electrical components, light bulb replacement, and cost of removal, installation, labor, transportation costs, and loss of use, inconvenience or consequential damages.

Warranty coverage - materials & workmanship

Limited lifetime warranty:

  • Stainless Steel: Side Steps, Grill Guards, Bull Bars, Bed Caps, and Side Rails
  • Aluminum: Side Steps, Running Boards, Storage Boxes, Transfer Tanks, Bed Protection, Invis-A-Racks, and Cab Racks
  • Plastic: Storage Boxes, and Bed Caps

3-Year Warranty:

  • Powder-Coated / E-Coated Steel: Side Steps, Running Boards, Storage Boxes, Transfer Tanks, Cab Racks, Ladder Racks, and Cargo Carriers
  • Rubber & Mechanical: Bed Mats, Floor Mats, Tailgate Assists, and Fuel Connection Kits
  • Other: All Products Not Otherwise Listed Individually

Warranty Coverage – Component Parts

Operational items such as shocks, latches, hinges, and wear items including, but not limited to, mud flaps, step pads, end caps, hardware, seals, etc. have a 1-year warranty.

Warranty Coverage – Finish Protection

The finish of all Dee Zee products is covered for 1-year from the date of purchase. Dee Zee products have a high-quality finish that must be cared for and maintained like any other exposed finish on the vehicle. Protect the finish with non-abrasive automotive wax (e.g. Pure Carnauba) on a regular basis. Applying soaps, polishes, or waxes that contain an abrasive compound may scratch the finish and leave the exposed material susceptible to corrosion.

GPI Transfer Tank Pumps & Accessories

All Great Plains Industries (GPI) products, including transfer tank pumps and fuel meters are covered by GPI’s warranty policies. Dee Zee’s warranty terms do not apply to GPI products.

Warranty Submission Procedure

All warranty claims will be initiated at the place of purchase. The original purchaser will be required to present the original sales receipt with purchase date shown and provide photographs of the defect.

In the event the originally purchased product style is no longer available, Dee Zee will warranty the defective part with a current equivalent. If a comparable product is no longer available, the product would be returned to the store of purchase for a refund or the applicable cost difference can be paid to choose an alternate style.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Product Reviews


Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

Dee Zee® - Single Door Underbody Tool Box
Dee Zee® - Single Door Underbody Tool Box
Average Rating: 4.5 of 5
4.5 of 5
Best Customer Service!!
The product was solid and heavy duty. Great quality made to last. I purchased one of these and ended up buying another for our other truck. I received a $20 off discount which made this the lowest price available.
CPosted by (Charlestown, MD) /
Was this review helpful for you? Yes

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