Dee Zee

Steel Underbed Box


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Add Storage to Your Semi Cab or Trailer

Spend time hauling cargo on the open road and you start to realize just how valuable of a commodity secure storage can be. Things like tools, parts and supplies can easily fill up just about every available inch of space, leaving little room for much else.

Designed to mount securely beneath your vehicle or trailer the Dee Zee Heavy Duty Underbed Tool Box is the ideal solution for those who need additional secure storage and want to take advantage of the wasted space down below.

Rugged With a Touch of Style

We know you need a tough toolbox regardless of where you’re going to mount it, that’s why we’ve constructed this one out of heavy duty 14-gauge steel with a black powder coat finish for an extra layer of lasting protection.

Water resistant C-Channel and Bulb Seal keep the contents of your box protected from the damaging harsh elements while a solid 12-gauge steel drop down door allows easy side vehicle access to your tools or supplies.

None of this would mean a thing if we skimped on the hardware, that’s why we went with a lockable 3-Point T-handle latching system to ensure easy operation and secure storage.

Our Underbed Toolbox comes in several size options to make it even more versatile and help you get the perfect storage option for your needs.

Heavy Truck Underbed Box Features:

  •     Heavy-Duty 14-Gauge Steel Body
  •     Lockable Stainless Steel Lockable T-Handle Latch
  •     3-Point Latching System
  •     Protective Black Powder-Coat Finish
  •     Single Drop Down Door For Easy Access
  •     Safety Cables To Support The Open Door
  •     Water Resistant C-Channel and Bulb Seal
  •     Mounting Brackets Sold Separately
  •     Several Size Options Available
  •     Three-Year Warranty

*Mounting braces sold separately.

NOTICE: Some products in this store can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Please check the product label for warning information. For more information go to We cannot ship any products into California that are affected by Proposition 65.

SHIPPING CHANGES: Due to new sales tax rules in the state of Colorado, effective June 1, 2019, purchases made online through JAX Mercantile for customers in the state of Colorado will only be able to be shipped to addresses within JAX current tax jurisdictions in Fort Collins, Loveland, Lafayette, and Broomfield. Customers in the state of Colorado who do not have shipping addresses within these zip codes may still opt for in-store pickup at any JAX store location when making a purchase on the JAX website. Learn more on our shipping and returns page.

COVID-19: Curbside Pick-Up