Product Description
Mounting Brackets: A Steel Underbody Mounting Kit Built to Bolt Boxes Solidly to Any Truck or Trailer Deck. Made in the USA by AMERICAN TRUCKBOXES ATB®
This underbody top hanging mounting kit gives contractors, tradespeople, and fleet operators a straightforward way to hang a truckbox underneath a truck deck or trailer deck. The two-bracket design bolts the box securely to the deck framing so it stays put over rough roads and job sites. American Truckboxes LLC manufactures this kit in Blanchard, North Dakota. Custom sizing and fleet quantities are available for shops running multiple trucks or trailers.
Key Features
- Hangs boxes underneath the deck: designed specifically for top hanging installation on the underside of a truck deck or trailer deck
- Complete bolt-on hardware: kit includes two mounting brackets plus the bolts, washers, and nuts needed to complete the install, no separate hardware order required
- Four-bolt bracket connection: each mounting bracket attaches with four bolts for a stable, secure hold under load
- Heavy-duty steel construction: HD steel brackets are built to carry the weight of a loaded underbody toolbox without flexing
- Powder coated black finish: the black powder coat resists chipping, rust, and weather exposure better than paint alone
- Guided installation: an installation sheet ships with every kit, and a full installation catalog is available on this product page for reference
- Two width options: sized for 36 inch and 48 inch box spans so the kit matches common underbody toolbox widths
Specifications
Material: HD Steel | Dimensions: 40″ to 52″ wide (bracket span) | Finish: Powder Coated Black | Mounting: Underbody top hanging | Warranty: 60-month limited warranty for standard kits, 12-month for custom or modified kits
American Truckboxes has manufactured heavy-duty steel and aluminum truck equipment in the USA for over 25 years. Visit truckbox.com or call (888) 996-0376 for custom sizing, fleet orders, or installation questions.
Frequently Asked Questions
Q: Where is this mounting kit made?
A: This underbody mounting kit is made in the USA by American Truckboxes LLC in Blanchard, North Dakota. American Truckboxes has manufactured heavy-duty truck equipment for over 25 years. Visit truckbox.com to see the full lineup.
Q: What warranty comes with this mounting kit?
A: Standard kits carry a 60-month (5-year) limited warranty. Custom or modified kits carry a 12-month limited warranty. The warranty applies to the original purchaser only and is non-transferable. Contact truckbox.com or (888) 996-0376 for full warranty details.
Q: Can I order a custom size?
A: Yes, custom sizes are available beyond the standard 36 inch and 48 inch widths listed here. Custom and modified kits carry a 12-month warranty. Reach out through truckbox.com or (888) 996-0376 to discuss your dimensions.
Q: What does this mounting kit include?
A: Each kit ships with two HD steel mounting brackets, the bolts, washers, and nuts needed for installation, and a printed installation sheet. A full installation catalog is also posted on this product page for reference.
Q: How does this kit attach to my truck or trailer?
A: The kit uses a top hanging design. Two mounting brackets bolt to the underside of the truck deck or trailer deck, four bolts per bracket, and the toolbox hangs from those brackets underneath the deck.
Q: Will this fit my underbody toolbox?
A: This kit is sized for underbody boxes in the 36 inch to 48 inch width range. If your box falls outside that range, contact American Truckboxes at truckbox.com or (888) 996-0376 to confirm fit or request a custom size.
Q: What finish protects this kit from rust?
A: The brackets are powder coated black, a finish that holds up better against chipping, rust, and everyday weather exposure than standard paint, keeping the hardware protected under the truck where it takes the most abuse.