american truckboxes

ATB Steel Cylinder Tank Storage Box

Secure Cylinder Tank Storage Built for Truck Flatbeds and Trailers

14 gauge steel build — Fully seam-welded on all corners
Holds 2-3 tanks — Top and bottom tank saddles
Outdoor waterproof design — Concealed rain gutter and bulb seal
Truck or trailer mount — Flatbed and trailer compatible
3-point locking system — Adjustable T-handle with SS latch
  • Ships Free -- LTL delivery to your site at no charge
  • Free Pre-offer Spec Review -- We verify door type, size, and mounting before you order

Price range: $1,486.00 through $2,333.00

30-day money back · No restocking fee

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4.9/5 Stars 2,400+ verified reviews.

In the box

  • ATB steel tank storage box
  • Pre-installed SS T-handle latch assembly
ATB Tank Storage Box
ATB Steel Cylinder Tank Storage Box
$1,486.00 – $2,333.00Price range: $1,486.00 through $2,333.00

Secure Cylinder Tank Storage Built for Truck Flatbeds and Trailers

The ATB heavy duty steel cylinder tank storage box delivers field-proven security for 2 to 3 cylinder tanks in outdoor environments. Built-to-spec with 14 gauge steel, fully seam-welded construction, and a 1/8 inch reinforced floor, this box handles real-world duty cycles without compromise. A concealed rain gutter and automotive bulb seal keep contents dry in any weather. Mount it on your flatbed or trailer and lock it down with the SS Dolphin Tail 3-point latch. Pay as low as $124/month with Affirm. Ships free.

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
3-Point Locking Latch
14-Gauge Steel Welded
Weather-Sealed Design
Flatbed & Trailer Mount
14-Gauge
Steel Body Construction
1/8 inch
Reinforced Floor Thickness
2–3
Tank Capacity Per Box
Spec'd Correctly Before It Ships

Spec'd Correctly Before It Ships

Ordering the wrong door configuration or size costs you downtime and a freight return. We eliminate that risk. When you contact Tank Vault about the ATB storage box, we verify your cylinder count, truck or trailer mounting requirements, and side-access preference before the order ships. If your application needs a left-side single door for driver-side access on a specific flatbed, we confirm that before processing. No guessing, no returns, no three-week delays while you wait for the correct configuration to arrive. The 14 gauge fully seam-welded box with 3-point locking latch arrives spec'd for your exact setup.

Field-Proven Outdoor Durability

Field-Proven Outdoor Durability

Outdoor cylinder storage demands construction that handles rain, road vibration, and daily use without rusting or leaking. The ATB box uses 14 gauge steel with a zinc epoxy primer and powder baked topcoat finish. Every seam and corner is fully welded — no rivets, no weak points. A concealed rain gutter and automotive bulb seal keep water out, protecting your cylinders from corrosion and contamination. The 1/8 inch reinforced floor supports tank weight without flexing, even on rough terrain. This is industrial-grade storage built to last through years of field exposure.

Secure Access With 3-Point Locking

Secure Access With 3-Point Locking

Cylinder tanks on a flatbed or trailer are a theft target and a liability if they shift during transport. The ATB storage box addresses both. A stainless steel Dolphin Tail T-handle with 3-point adjustable latch locks the door at three points along the frame. Gas spring door supports hold the door open during loading and unloading. Top and bottom tank saddles lock cylinders in position so they don't move on the road. Choose single or double door, left or right side open — matched to how your crew actually works on the truck bed.

Verify Your Fitment

Confirm your mounting surface and tank configuration before ordering.

  • Flatbed or trailer surface width accommodates selected box width (24", 30", or 36")
  • Mounting surface depth accommodates selected box depth (16", 18", 20", or 24")
  • Total installed height of 65" clears overhead available on your vehicle or trailer

Where This Box Works

Designed for outdoor, mobile cylinder tank storage across demanding applications.

Truck Flatbed Cylinder Storage
Trailer-Mounted Tank Transport
Job Site Outdoor Tank Security
Fire Department Cylinder Staging

Full specifications

At a glance

Dimensions
24"x16"x65", 30"x18"x65", 36"x20"x65", 36"x24"x65"
Surface
Zinc epoxy primer with powder baked topcoat finish
Warranty
See product page
Full specifications15 data points across 4 categories

Dimensions

Available Sizes24"x16"x65", 30"x18"x65", 36"x20"x65", 36"x24"x65"
Door ConfigurationBlack Steel Single Door Left Side Open, Black Steel Single Door Right Side Open, Black Steel Double Door Left Side Open, Black Steel Double Door Right Side Open
Tank CapacityUp to 2 or 3 tanks

Materials

Body Construction14 gauge steel design
FloorHeavy duty 1/8 inch thick reinforced floor for tanks
FinishZinc epoxy primer with powder baked topcoat finish
HingeStainless steel continuous hinge on full length of the door
LatchLockable SS Dolphin Tail heavy duty adjustable T-Handle 3 point latch
WeldingFully seam welded on all seams and corners
Door ConstructionChannel braced reinforced door with gas spring door supports

Weather Protection

Rain GutterConcealed rain gutter
SealAutomotive type weather seal
Tank SecurityTop & Bottom tank saddles for positive tank security

Compliance & Warranty

DocumentationSee product page
WarrantySee product page

The Tank Vault Promise

Every product we carry is vetted for build quality, real-world performance, and warranty support.

Free Compliance DocumentationAll applicable spec sheets and product documentation included with your order — no chasing the manufacturer after delivery.
Free Shipping on Every OrderLTL freight delivery arranged to your site. Contact us for liftgate or job-site delivery options.
30-Day Hassle-Free ReturnsIf it doesn't meet your spec sheet or arrives damaged, we resolve it immediately — uninstalled, original packaging.
★★★★★
“Mounted the 36x20 double-door box on our service flatbed three months ago. Cylinders stay locked down, no movement on rough roads, and the weather seal has kept everything dry through heavy rain. The 3-point latch feels solid — nobody is getting into this without a key. Tank Vault confirmed our door configuration before we ordered, which saved us from ordering the wrong side-access.”
F
First L.Dallas, TX

ATB heavy duty steel cylinder tank storage boxes provide secure, lockable storage for cylinder tanks.  The cylinder stank storage cabinets are available in aluminum or steel.

The tank storage box design includes top & bottom tank saddles for tank security.  Storage boxes are designed to hold up to 2 or 3 tanks.

The tank storage boxes are designed for outdoor use with waterproof features including a concealed rain gutter and automotive bulb sealing.

The tank storage box can be mounted on a truck flatbed or trailer.  

ATB Tank Storage Box Features:

  • 14 gauge steel design.
  • Choose Right or Left side open doors.
  • Choose Single or Double door design.
  • Fully seam welded on all seams and corners.
  • Stainless steel continuous hinge on full length of the door.
  • Channel braced reinforced door with gas spring door supports.
  • Lockable SS Dolphin Tail heavy duty adjustable T-Handle 3 point latch.
  • Rain gutter and automotive type weather seal.
  • Zinc epoxy primer with powder baked topcoat finish.
  • Top & Bottom tank saddles for positive tank security.
  • Heavy duty 1/8 inch thick reinforced floor for tanks.

Tank Storage Box Optional Features:

  • Optional L Shape side deck mount.
  • Optional Mounting Kit.

Tank Storage Box Door Height:

  • All tank storage boxes have a 60 inch door opening height.

Steel Single Door Tank Storage Box Dimensions:

  • 24″L x 16″W x 65″H: 2 tanks / Door Opening Length 19.5″ / 169 pounds
  • 30″L x 18″W x 65″H: 2 tanks / Door Opening Length 25.5″ / 211 pounds
  • 36″L x 20″W x 65″H: 3 tanks / Door Opening Length 31.5″ / 258 pounds
  • 36″L x 24″W x 65″H: 3 tanks / Door Opening Length 31.5″ / 290 pounds

Steel Double Door Tank Storage Box Dimensions:

  • 24″L x 16″W x 65″H: 2 tanks / Door Opening Length 19.5″ / 172 pounds
  • 30″L x 18″W x 65″H: 2 tanks / Door Opening Length 25.5″ / 214 pounds
  • 36″L x 20″W x 65″H: 3 tanks / Door Opening Length 31.5″ / 262 pounds
  • 36″L x 24″W x 65″H: 3 tanks / Door Opening Length 31.5″ / 293 pounds

Other Tool Box Options:

  • For more options see propane tank storage or other ATB Boxes.

Additional information

TYPE

Black Steel Double Door Left Side Open, Black Steel Double Door Right Side Open, Black Steel Single Door Left Side Open, Black Steel Single Door Right Side Open
Dimensions

24"x16"x65", 30"x18"x65", 36"x20"x65", 36"x24"x65"

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Frequently Asked Questions

The ATB storage box is designed to hold 2 to 3 standard cylinder tanks using top and bottom saddles for secure positioning. Available in four width/depth configurations — 24"x16", 30"x18", 36"x20", and 36"x24" — all with a 65-inch height. Contact Tank Vault with your specific cylinder dimensions and we will confirm the correct size and door configuration before you order.
Yes. The ATB storage box is designed for outdoor use with a 14 gauge steel body, zinc epoxy primer, and powder baked topcoat finish. A concealed rain gutter and automotive bulb weather seal prevent water intrusion. Every seam and corner is fully welded — no exposed fasteners or gaps. The 1/8 inch reinforced floor handles tank weight without flexing, even in rough field conditions.
The stainless steel Dolphin Tail T-handle engages a 3-point adjustable latch that locks the door at three positions along the frame — top, middle, and bottom. This distributes locking force across the full door panel, preventing prying or forced entry. A stainless steel continuous hinge runs the full door length for additional structural integrity. Gas spring supports hold the door open during cylinder loading.
Lead times vary by configuration and current factory production schedule. Contact Tank Vault with your required door type, size, and delivery deadline. We coordinate LTL freight to your job site, yard, or terminal. Ship free to your location — call for liftgate or specific job-site delivery requirements if you need the box placed in a particular spot.
Larger width and depth dimensions require more 14 gauge steel and a wider reinforced floor, which increases material cost. Double door configurations add a second door panel, hinge set, latch assembly, and gas spring supports. The pricing reflects the actual material and fabrication required for each build. Contact Tank Vault and we will quote the exact configuration that fits your cylinder count and mounting setup.
Yes. The ATB storage box is designed for flatbed and trailer mounting. Optional L-shaped side deck mount brackets are available for secure attachment. The box can also be bolted directly to your flatbed surface. Tell us your truck or trailer setup during your pre-offer spec review and we will confirm the right mounting approach and any additional hardware needed.
Single door provides full-length access on one side and works well when you always load from the same side of the truck. Double door gives you access from both sides, useful when the box sits between wheel wells or when crew members need to reach cylinders from either side. Left or right side open is selected based on your flatbed layout and workflow. We verify this during your pre-offer spec review.
SKU: S-SRT41-651624SL-BX-2 Categories: , Brand:

The Tank Vault Promise

Every product we carry is vetted for build quality, real-world performance, and warranty support.

Free Compliance Documentation All applicable spec sheets and product documentation included with your order — no chasing the manufacturer after delivery.
Free Shipping on Every Order LTL freight delivery arranged to your site. Contact us for liftgate or job-site delivery options.
30-Day Hassle-Free Returns If it doesn't meet your spec sheet or arrives damaged, we resolve it immediately — uninstalled, original packaging.

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