american truckboxes

ATB Top Side Utility Toolbox — Aluminum Top Open, Fully Seam Welded

Heavy-Duty Top Access Storage for Trucks, Trailers & Flatbeds

Mounts anywhere — Fits trucks, trailers, and flatbeds
Top open access — Slanted lid with gas spring assist
Fully seam welded — No rivets, no leak points
Weather-sealed interior — Concealed rain gutter and automotive seal
Nine size options — 43" to 94" lengths available
  • Free Shipping -- LTL freight delivery to your site at no charge
  • Free Pre-offer Spec Review -- We verify size and mounting fit before you order

Price range: $910.00 through $2,254.00

30-day money back · No restocking fee

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Ships in 3–5 Days Heavy-duty crating included.
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In the box

  • ATB Top Side Utility Toolbox (selected size)
  • SS Dolphin Tail HD T-handle latch
  • Gas springs and continuous hinge (pre-installed)
ATB Top Side Utility Toolbox Top Open
ATB Top Side Utility Toolbox — Aluminum Top Open, Fully Seam Welded
$910.00 – $2,254.00Price range: $910.00 through $2,254.00

Heavy-Duty Top Access Storage for Trucks, Trailers & Flatbeds

The ATB topside utility truck toolbox delivers industrial-grade storage with a slanted top-open design for fast side access. Fully seam welded and spec'd in heavy-gauge aluminum (.09 smooth or .10 tread plate), this box is built-to-spec for daily commercial use. A stainless steel continuous hinge runs the full lid length, and channel-braced doors with gas springs make loading and unloading straightforward. Ships free. Pay as low as $76/month with Affirm.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
Top Open Door
Fully Seam Welded
Gas Spring Assisted
SS Continuous Hinge
10
Size configurations
.09 / .10
Aluminum gauge (in.)
43–94
Length range (in.)
The Right Size Before It Leaves the Dock

The Right Size Before It Leaves the Dock

The wrong toolbox size means wasted rack space, mismatched mount points, and a return freight claim that costs your operation three weeks. Tank Vault eliminates that risk with our pre-offer spec review — we verify your truck bed dimensions, mounting position, and capacity requirements before the order ships. If the 48-inch box won't clear your headache rack, we catch it before it leaves the dock. The ATB topside utility box is spec'd in heavy-gauge aluminum (.09 smooth or .10 tread plate), fully seam welded on every seam and corner, and built to handle the vibration and exposure that kills consumer-grade boxes on real job sites.

Sealed Against the Elements — Not Just Sprayed

Sealed Against the Elements — Not Just Sprayed

Water infiltration ruins tools, rusts hardware, and costs more than the toolbox itself. The ATB topside utility box uses a fully concealed rain gutter system with an automotive-type weather seal running the full lid perimeter. The stainless steel continuous hinge spans the entire lid length — no hinge gaps, no pinch points, no failure after six months of daily use. Channel-braced reinforced doors with gas springs hold the lid open at the right angle without strutting or slamming. This is industrial-grade weather protection, not a bed-rail box with a foam strip.

Full Top Access Without Leaving the Side of the Truck

Full Top Access Without Leaving the Side of the Truck

Nine size configurations from 43 inches to 94 inches in length cover flatbeds, service bodies, and trailer applications. The slanted top-open design gives you full top access from the side of the truck — no reaching across a bed or climbing into a trailer. The lockable stainless steel Dolphin Tail HD adjustable T-handle latch accepts standard padlocks and holds up to repeated daily use without binding. Choose .09 smooth aluminum for a clean finish or .10 tread plate for maximum dent resistance. Optional shelves and mounting kits are available for configurations that demand organized internal storage.

Verify Your Mounting Space

Confirm your truck, trailer, or flatbed can accommodate one of the available size configurations before ordering.

  • Mounting surface width between 14 in. and 20 in.
  • Available bed or rail length of 43 in., 48 in., 72 in., or 94 in.
  • Minimum vertical available for slanted top-open lid operation

Where This Toolbox Works

Designed for commercial vehicles and flatbeds that need secure, high-capacity side-access storage.

Service truck bed or side mount
Flatbed trailer equipment storage
Agricultural equipment setups
Utility and municipal fleet vehicles

Full specifications

At a glance

Dimensions
43"x14"x48", 48"x14"x21", 48"x16"x21", 48"x20"x28", 72"x14"x21", 72"x16"x21", 72"x20"x28", 94"x14"x21", 94"x16"x21", 94"x20"x28"
Surface
.09 smooth / .10 tread plate aluminum
Warranty
See product page
Full specifications10 data points across 4 categories

Dimensions

Available Sizes43"x14"x48", 48"x14"x21", 48"x16"x21", 48"x20"x28", 72"x14"x21", 72"x16"x21", 72"x20"x28", 94"x14"x21", 94"x16"x21", 94"x20"x28"

Power & Performance

Door OperationGas springs
Latch TypeLockable SS Dolphin Tail HD adjustable T-Handle

Materials

TypeAluminum
Material Options.09 smooth / .10 tread plate aluminum
HingeStainless steel continuous hinge
FinishNo Powder Coat

Compliance & Warranty

Weld ConstructionFully seam welded on all seams and corners
Weather SealingFully concealed rain gutter with automotive type weather seal
WarrantySee product page

The Tank Vault Promise

Every Tank Vault order is backed by straightforward policies — no runaround, no fine print.

Ships Free — NationwideLTL delivery to your job site, yard, or facility at no extra cost. Call for liftgate or inside delivery options.
30-Day Hassle-Free ReturnsUninstalled, original packaging — if it doesn't meet your spec or arrives damaged, we resolve it immediately.
Free Pre-offer Spec ReviewWe verify your application and size requirements before you order so you get the right configuration the first time.
★★★★★
“We mounted two 72-inch ATB boxes on our service trucks six months ago. The gas springs still hold solid, the weather seal keeps everything dry through highway rain, and the T-handle latch hasn't bound up once. First toolbox we've bought that survived a full paving season without the lid sagging.”
M
Mike L.Columbus, OH

The ATB topside utility truck toolbox with top open door can be mounted to the top or on the side of on trucks, trailers and flatbeds. 

Top side utility boxes are heavy duty, high capacity and offer easy access from the side of a truck or flatbed.

The topside utility toolbox includes a slanted top design with a top open door.

Optional shelves provide additional storage and organization options.

ATB Top Side Utility Toolbox Features:

  • Choose .09 smooth / .10 tread plate aluminum or design.
  • Top Open Door.
  • Fully seam welded on all seams and corners.
  • Stainless steel continuous hinge on full length of lid.
  • Channel braced reinforced doors with gas springs.
  • Lockable SS Dolphin Tail HD adjustable T-Handle latch.
  • Fully concealed rain gutter, with automotive type weather seal.
  • Optional shelf can be added on to the toolbox.
  • Mounting kit available as optional add-on accessory.

ATB Top Side Utility Toolbox Sizes & Dimensions:

Aluminum

  • 43″L x 14″W x 19″H: Slanted Top / Top open / 36 pounds
  • 48″L x 14″W x 21″H: Slanted Top / Top open / 42 pounds
  • 72″L x 14″W x 21″H: Slanted Top / Top open / 62 pounds
  • 94″L x 14″W x 21″H: Slanted Top / Top open / 78 pounds
  • 48″L x 16″W x 21″H: Slanted Top / Top open / 46 pounds
  • 72″L x 16″W x 21″H: Slanted Top / Top open / 64 pounds
  • 94″L x 16″W x 21″H: Slanted Top / Top open / 82 pounds
  • 48″L x 20″W x 28″H: Slanted Top / Top open / 60 pounds
  • 72″L x 20″W x 28″H: Slanted Top / Top open / 86 pounds
  • 94″L x 20″W x 28″H: Slanted Top / Top open / 108 pounds

Additional Toolbox Specs:

A Depth: the toolbox depth at the top of the box.
B Height: toolbox height to the start of the top open door.

  • 43″L x 14″W x 19″H: A Depth: 9″ / B Height: 6 inches 
  • 48″L x 14″W x 21″H: A Depth: 9″ / B Height: 8 inches 
  • 72″L x 14″W x 21″H: A Depth: 9″ / B Height: 8 inches 
  • 94″L x 14″W x 21″H: A Depth: 9″ / B Height: 8 inches 
  • 48″L x 16″W x 21″H: A Depth: 11″ / B Height: 8 inches
  • 72″L x 16″W x 21″H: A Depth: 11″ / B Height: 8 inches 
  • 94″L x 16″W x 21″H: A Depth: 11″ / B Height: 8 inches 
  • 48″L x 20″W x 28″H: A Depth: 13″ / B Height: 10 inches 
  • 72″L x 20″W x 28″H: A Depth: 13″ / B Height: 10 inches 
  • 94″L x 20″W x 28″H: A Depth: 13″ / B Height: 10 inches 

Open Top Door Dimensions:

  • 43″L x 14″W x 19″H: Door Opening: 14.81″H / 39.875″W
  • 48″L x 14″W x 21″H: Door Opening: 14.81″H / 44.875″W
  • 72″L x 14″W x 21″H: Door Opening: 14.81″H / 32.56″W
  • 94″L x 14″W x 21″H: Door Opening: 14.81″H / 32.56″W
  • 48″L x 16″W x 21″H: Door Opening: 14.81″H / 44.875″W
  • 72″L x 16″W x 21″H: Door Opening: 14.81″H / 32.56″W
  • 94″L x 16″W x 21″H: Door Opening: 14.81″H / 32.56″W
  • 48″L x 20″W x 28″H: Door Opening: 20.19″H / 44.875″W
  • 72″L x 20″W x 28″H: Door Opening: 20.19″H / 32.56″W
  • 94″L x 20″W x 28″H: Door Opening: 20.19″H / 43.56″W

Other Tool Box Options:

  • For more options see other American Truckboxes or all flatbed tool boxes.

Additional information

TYPE

Aluminum
Dimensions

43"x14"x48", 48"x14"x21", 48"x16"x21", 48"x20"x28", 72"x14"x21", 72"x16"x21", 72"x20"x28", 94"x14"x21", 94"x16"x21", 94"x20"x28"
Finish

No Powder Coat

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Frequently Asked Questions

The ATB topside utility toolbox does not include a mounting kit as standard. A mounting kit is available as an optional add-on accessory. You can fabricate your own mounting hardware, but the optional kit is spec'd to match the box's mounting points and aluminum construction. Contact Tank Vault before ordering if you need the mounting kit added to your shipment — we'll confirm compatibility with your truck or flatbed setup during our free pre-offer spec review.
The .09 smooth aluminum provides a clean, finished appearance with a flat surface. The .10 tread plate adds a raised diamond pattern that increases dent resistance and hides surface scratches — useful for boxes mounted in high-traffic areas where tools and equipment contact the exterior regularly. Both options are fully seam welded and built to the same construction standard. The tread plate option adds marginal weight due to the thicker material gauge.
Yes. An optional shelf can be added to the ATB topside utility toolbox for additional storage organization. The shelf is not included by default — it must be selected as an add-on at the time of order. If you need multiple shelves or custom shelf placement, contact us before ordering. We'll coordinate the right configuration for your tools and equipment layout during our pre-offer spec review.
The channel-braced reinforced doors use gas springs rated to hold the lid open at the slanted angle without additional support. On uneven ground, the gas springs maintain lid position under normal wind conditions. The slanted top design sheds water naturally when the lid is closed, which is the intended position when the truck is parked on a grade. The stainless steel continuous hinge provides full-length structural support across the entire lid.
It depends on your flatbed width, rail height, and what you're storing. The ATB topside utility box comes in nine configurations from 43" to 94" in length with 14", 16", and 20" depths. Measure your available mounting area and account for any headache racks or side rails before selecting a size. Contact Tank Vault with your flatbed specs — we'll verify the right dimensions during our free pre-offer spec review so you don't end up with a box that doesn't fit.
The ATB topside utility box uses a fully concealed rain gutter with an automotive-type weather seal around the full lid perimeter. The stainless steel continuous hinge eliminates hinge-gap leakage common on consumer-grade boxes. In sustained driving rain or highway spray, the seal system prevents water intrusion under normal conditions. No toolbox is hermetically sealed, but this construction is field-proven for commercial truck and flatbed applications where tools must stay dry.
Yes. All Tank Vault orders ship free, including residential deliveries. This toolbox ships via LTL freight due to its size and weight. For residential delivery, the carrier will typically curbside-drop the pallet. If you need liftgate service or delivery inside a gated property, contact us before ordering — we'll coordinate the right freight options for your site at no additional shipping charge.
SKU: A-TU41-191443S-T Categories: , Brand:

The Tank Vault Promise

Every Tank Vault order is backed by straightforward policies — no runaround, no fine print.

Ships Free — Nationwide LTL delivery to your job site, yard, or facility at no extra cost. Call for liftgate or inside delivery options.
30-Day Hassle-Free Returns Uninstalled, original packaging — if it doesn't meet your spec or arrives damaged, we resolve it immediately.
Free Pre-offer Spec Review We verify your application and size requirements before you order so you get the right configuration the first time.

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