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  1. Underbody Tool Box
  2. Phoenix USA
  3. 24 Inch Long
  4. Trailer Underbody Box
  5. Truck Underbody Tool Box
  6. Steel
Phoenix USA Underbody Tool Box for Truck or Trailer - Steel - 24" x 18" - 4.5 Cu Ft
Phoenix USA

Phoenix USA Underbody Tool Box for Truck or Trailer - Steel - 24" x 18" - 4.5 Cu Ft

Part Number: PHX79ZR
In Stock
$478.00
Underbody Tool Box
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Secure, weather-resistant storage installs right where you need it. Underbody toolboxes can mount below your trailer or flatbed, keeping gear secure, dry - out of the way. The black powder coat body and stainless steel door protect your investment. Great Prices for the best underbody tool box from Phoenix USA. Phoenix USA Underbody Tool Box for Truck or Trailer - Steel - 24" x 18" - 4.5 Cu Ft part number PHX79ZR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (5)
  • Q & A (0)
  • Videos (1)
  • Photos

Phoenix USA Underbody Tool Box - PHX79ZR

  • 24 Inch Long
  • Trailer Underbody Box
  • Truck Underbody Tool Box
  • Phoenix USA
  • Steel
  • 18 Inch Tall
  • 18 Inch Wide
  • Small Capacity
  • Silver

Secure, weather-resistant storage installs right where you need it. Underbody toolboxes can mount below your trailer or flatbed, keeping gear secure, dry - out of the way. The black powder coat body and stainless steel door protect your investment.


Highlights

  • Stainless Steel Door and Hardware: Resists rust, opens with surface or underbody mounting.
  • Spacious Storage Capacity: 4.5 cubic feet for tools, equipment, and safety gear.
  • Mount It Your Way: Underbody, flatbed, or custom setups hinge will work for all applications.
  • Upgraded Latch is Secure: Stainless steel, twist-style, compression latch with key lock.
  • Shuts Out the Elements: Automotive grade seal blocks out rain, dust, and road grime.
  • Built to Last: Heavy-duty 13-gauge steel with gloss black powder coat finish.

Specs

Application

  • Underbody toolbox that can also be installed on a flat surface
  • Use with: Trucks or trailers

Weight & Capacity

  • Capacity: 4.5 cu ft
  • Weight: 65 lbs

Dimensions

  • Length: 24"
  • Width: 18"
  • Height: 18"

Latch

  • Locking Twist-Compression Latch
    • Includes 2 keys

Material & Finish

  • Material:
    • Body: 13-gauge steel
    • Door & Box Hardware: Stainless steel
  • Finish:
    • Body: Corrosion-resistant black powder coat
    • Door: Polished stainless steel

Warranty

  • Warranty: 1-Year limited

Note:

Installation brackets and hardware are NOT included, as they can be specific to installation location. We suggest the pre-drilled, Redline Underbed Toolbox Mount Kit (350998), for many applications. You will still need to supply fastening hardware.



STSD24A Pheonix USA Underbody Tool Box for Truck or Trailer - Steel - 24" x 18" - 4.5 Cu Ft - Stainless Steel Door




California residents: click here


Video of Phoenix USA Underbody Tool Box for Truck or Trailer - Steel - 24" x 18" - 4.5 Cu Ft

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Phoenix USA Underbody Tool Box - Steel Underbody Tool Box Truck Trailer - PHX79ZR

Hi, everybody, Andy here with etrailer.com. Let's take a real quick look at this Phoenix USA steel underbody toolbox for your truck or trailer. Now, if you're looking for a strong, secure, weather-resistant underbody toolbox for your truck or trailer, this might be a great box for you to consider. This box can be used on flap beds, trailers, utility trucks, and other heavy duty vehicles. And since this is an underbody toolbox, this is not going to take up bed space in your truck or trailer and it's going to keep your storage accessible but also out of the way. As you can see the stainless steel door there, it's polished, so it has a really powerful reflection there, mirror image, so you're gonna be able to see how the magic's done behind my cameras there a little bit.

So a box like this is typically designed for contractors, truckers, landscapers, and trailer owners who are all looking for a secure out-of-the-way storage solution. And this is gonna be ideal to keep your tie downs, your tools, your chains, and other equipment. Let me go ahead and give you some overall measurements. So looking at the overall length, we're sitting right at 24 inches. And then looking at, you can call it the depth or the width from the front of the door, all the way to the back.

We're sitting pretty close to 18 inches, maybe slightly over 18 inches. And then the height from bottom to top, 18 inches. So as I mentioned, this does have a polished stainless steel door and it's gonna be very easy to pop this open. So we have a flush-mounted T handle. I'm gonna lift that up, give it a turn.

And as you can see, I already have a toolbox in there. Let me give you a lower angled view just so you can see a little bit more what's going on inside. Obviously, it's pretty dark in there because they have black powder-coat interior. I'll just go ahead and pull this toolbox out just to kind of give you an idea of the space there. So inside, we have right at about 4.5 cubic feet of storage space inside.

And then we have these cables here that are gonna keep this door from opening past 90 degrees and they do have these carabiners here, so you could remove these cables if you wanted to, but this is gonna be nice and open. So you're gonna be able to clearly see what you have in there. So at a glance, you're gonna be able to grab what you need and then throw it back in there. This is built to last with heavy duty 13 gauge steel. So, also features this gloss black powder-coat finish that's gonna be corrosion-resistant, along with the stainless steel door. And this door does have a good weight to it. So again, everything of this box really does speak of durability. I also wanted to point out that around the perimeter here, we do have this automotive grade seal that's going to blockout, rain, dust, snow, dirt, debris, road grime, road spray. So your gear inside is going to be nice and protected. Now, closing this up, I said that our handle was flush-mounted and indeed it is. You are going to get two keys as you can see here. So you're gonna be able to lock this up for that secure storage that you're looking for. So you just turn that key, that's gonna lock that T handle. And I do like that the handle covers up that keyhole, so it's going to keep it protected from moisture, dirt, debris, things like that so that keyhole should always be clean for you. So very easy, very smooth operation to lock and unlock. Now, installation brackets are not included with this. Since this is more of a custom mounting operation for you, you're gonna have to come up with the brackets and the hardware that's going to work best to mount this for your particular application. So no mounting brackets or hardware with this. Now, as you probably know, Phoenix USA is known for making very strong, durable, robust towing products and this box is gonna be no exception to that. This is gonna be a very durable solution for you if the rest of the specs match what you're looking for. And again, that mirrored reflective stainless steel door is gonna look really good on whether it's your truck or your trailer. Now, if you decide this is going to be exactly what you need and you order it and you get it installed, we would love to hear back from you. You could drop us a review on this product page, send us an email, give us a call. What we would also really like to see is some pictures of your setup as well, so we can see how you're gonna be using this box and hearing about how you're gonna be using this box. Well, I think that's gonna wrap up our quick look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.

Ratings & Reviews

4.6

5 reviews
Secure, weather-resistant storage installs right where you need it. Underbody toolboxes can mount below your trailer or flatbed, keeping gear secure, dry - out of the way. The black powder coat body and stainless steel door protect your investment.

by:

good looking



by:

Fitted perfect well please grace is the perfect salesperson.



by:

It’s a nice enough toolbox, it’s just not dimensions it was advertised as so it will require extra work to mount it.



by:

Well built under body box



by:

Well built under body box

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

3/13/2025

Hey William! The box looks great on your flat bed! What kind of gear are you going to store?


5
5

See what our Experts say about this Phoenix USA Underbody Tool Box


Info for this part was:

Employee Leah S
Edited by:
Leah S
Employee Wilson B
Updated by:
Wilson B
Employee Andy C
Installed by:
Andy C
Employee James M
Written by:
James M

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