american truckboxes

ATB Generator Storage Box — Side-Open Aluminum Mount

Secure Generator Storage Built for the Field

Seam-welded .125" aluminum — Industrial-grade protection for field use
500 lb drawer slides — Smooth slide-out with lock-in positions
Stainless steel grills — Intake and exhaust on three sides
Lockable stainless latch — Positive weather seal with adjustable striker
  • FREE Pre-offer Spec Review -- We verify fitment for your generator and mounting application
  • FREE Shipping -- LTL delivery to your site included with every order

Price range: $1,730.00 through $3,903.00

30-day money back · No restocking fee

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Free Returns 30-day hassle-free returns.
Free Delivery Every order, every time.
Ships in 3–5 Days Heavy-duty crating included.
4.9/5 Stars 2,400+ verified reviews.

In the box

  • ATB generator storage box (assembled)
  • Stainless steel latch and lock hardware
  • Drawer slide mechanism (installed)
ATB Generator Storage Box Side Open
ATB Generator Storage Box — Side-Open Aluminum Mount
$1,730.00 – $3,903.00Price range: $1,730.00 through $3,903.00

Secure Generator Storage Built for the Field

The ATB side open generator storage box delivers industrial-grade protection for your generator, spec'd for top-mount or side-mount installation on trucks and trailers. Built-to-spec from .125-inch aluminum with full seam welding, this box handles the vibration, weather, and road debris that take out lesser enclosures. The 500-pound drawer slides give you lock-in and lock-out access for straightforward servicing in the field. Fifteen size options cover a wide range of generator models, so you match the box to your actual equipment — not the other way around. Ships free to your site.

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
Aluminum Construction
Full Seam Welded
Slide-Out Drawer Access
500 lb. Drawer Slides
.125 in
Aluminum Thickness
500 lbs.
Drawer Slide Rating
15
Available Sizes
Spec'd Right Before It Ships

Spec'd Right Before It Ships

Ordering a generator box that doesn't match your truck bed or trailer mount wastes weeks on return freight and leaves your generator exposed. That's why we verify your dimensions and mounting application before the order ships. Every order gets spec'd against your generator model and our size range — from 20"x26"x24" up to 40"x36"x38" — and we confirm available requirements including the mandatory 5-inch air grill spacing. If the box won't work for your setup, we catch it before it leaves our system. No guesswork. No return freight claims.

Seam-Welded Aluminum Holds Up to Real Roads

Seam-Welded Aluminum Holds Up to Real Roads

The ATB box is built from .125-inch thick aluminum with full seam welding on every joint and corner — industrial-grade construction that resists vibration cracking, weather exposure, and road debris. The stainless steel continuous hinge runs the full length of the door, eliminating hinge-point flex that plagues shorter hinge designs. An adjustable lock striker maintains a positive weather seal against dust and moisture, keeping your generator dry and protected through sustained field deployment.

Slide-Out Access for Fast Servicing

Slide-Out Access for Fast Servicing

The 500-pound rated drawer slides let you pull the generator out for service without unbolting or lifting. Lock-in and lock-out positions hold the drawer securely at any point — no drift while you're working on oil changes, filter replacements, or electrical connections. Front access panels provide additional reach for routine maintenance without full slide-out. The automotive-style rotary latch operates smoothly with gloved hands, and the lockable stainless steel hardware keeps the unit secure when left on job sites or fleet yards overnight.

Size Your Generator Box

Select from 15 available dimensions. Confirm your generator's footprint plus available requirements before ordering.

  • Generator footprint fits within selected interior dimensions
  • Minimum 5-inch available maintained on all air grill faces
  • Mounting surface accommodates selected box length and width

Field Applications

Designed for mobile operations where generator access and protection are non-negotiable.

Truck Bed Mount
Trailer Side Mount
Job Site Power
Agricultural Operations

Full specifications

At a glance

Dimensions
20"x26"x24", 24"x24"x22", 26"x24"x24", 26"x28"x24", 28"x30"x26", 28"x32"x28", 30"x24"x24", 34"x34"x32", 36"x24"x24", 38"x40"x36", 38"x48"x36", 38"x62"x44", 40"x32"x36", 40"x36"x32", 40"x36"x38"
Warranty
See product page
Full specifications10 data points across 4 categories

Dimensions

Available Sizes20"x26"x24", 24"x24"x22", 26"x24"x24", 26"x28"x24", 28"x30"x26", 28"x32"x28", 30"x24"x24", 34"x34"x32", 36"x24"x24", 38"x40"x36", 38"x48"x36", 38"x62"x44", 40"x32"x36", 40"x36"x32", 40"x36"x38"

Power & Performance

Drawer Slide Rating500 lbs.
Air availableMinimum 5 inch distance

Materials

TypeAluminum
Wall Thickness.125 inch
HingeStainless steel continuous hinge
LatchLockable stainless steel latch
GrillStainless steel intake and exhaust grill

Compliance & Warranty

DocumentationSee product page
WarrantySee product page

The Tank Vault Promise

What you order is what ships. No surprises.

Spec-Verified Before ShipWe confirm your selected dimensions and configuration match your generator requirements before processing.
Free Shipping to Your SiteLTL freight coordinated to your job site, yard, or facility — no minimum order threshold.
30-Day Hassle-Free ReturnsUninstalled, original packaging — if it doesn't meet your spec sheet or arrives damaged, we resolve it immediately.
★★★★★
“Bought the 34x34x32 for our service truck. Slides smooth, latch holds tight, and the welds are clean throughout. Had Tank Vault verify the dimensions against our generator before ordering — box showed up and dropped right in. No return freight, no guessing.”
M
Mike L.Fort Worth, TX

The ATB side open generator storage box can be mounted on top or on the side of your truck or trailer.

The aluminum generator storage box is available in multiple sizes and is designed to store a wide range of generator models.

*Additional product specs are available under the product spec sheets below.

ATB Generator Storage Box Features:

  • Smooth .125 inch thick Aluminum design.
  • Fully seam welded on all seams and corners.
  • Stainless steel continuous hinge on full length of door.
  • Heavy duty 500 lbs. drawer slides.
  • Drawer slide-out with lock-in / lock-out slides for easy service.
  • Lockable stainless steel latch.
  • Adjustable lock striker for positive weather seal.
  • Durable stainless steel intake and exhaust grill / left / right / back.
  • Front access for convenient servicing of generator.
  • Automotive style latch with smooth rotary action.
  • Optional Add On: stainless steel front intake grill.
  • Optional Add On: mounting kit.

Note: a minimum of 5 inch distance of space from the air grill is required on the full face of the air intake and exhaust grill for proper air movement.

ATB Side Open Generator Storage Box Dimensions / Generator Model / Weight:

  • 24″W x 24″D x 22″H: Honda EU1000i / Yamaha EF1000i & EF2000i / Champion 2000wi / 76 pounds
  • 26″W x 28″D x 24″H: Champion 3500 Watt / Yamaha EF2600 / 79 pounds
  • 20″W x 26″D x 24″H: Honda EU2000i  / 74 pounds
  • 26″W x 24″D x 24″H: Yamaha EF2400i & EF2800i / 76 pounds
  • 30″W x 24″D x 24″H: Champion 3100wi & 3500wi / 78 pounds
  • 36″W x 24″D x 24″H: 4000 watt / 92 pounds
  • 28″W x 30″D x 26″H: Honda EU3000i / Yamaha EF3000i / Champion 3400wi / 94 pounds
  • 28″W x 32″D x 28″H: Honda EU3000iS / 108 pounds
  • 34″W x 34″D x 32″H: Honda EG4000 & EG6500 / Yamaha EF4500i & EF6300i / 138 pounds
  • 40″W x 36″D x 32″H: 6500 watt / 168 pounds
  • 40″W x 32″D x 36″H: Yamaha EF5500d & EF7200d / 168 pounds
  • 38″W x 40″D x 36″H: Honda EU7000iS / 182 pounds
  • 38″W x 48″D x 36″H: Honda EB4000-EB5000 & EM4000S-EM6500S & EB6500 / 204 pounds
  • 40″W x 36″D x 38″H: Yamaha EF12000D / 182 pounds
  • 38″W x 62″D x 44″H: Honda EB10000 / 254 pounds

ATB Side Open Generator Storage Box Door & Slide Out Tray Dimensions:

  • 24″W x 24″D x 22″H: Door: 20.5″W x 18.5″H / Tray: 15.5″W x 22″D
  • 26″W x 28″D x 24″H: Door: 22.5″W x 20.5″H / Tray: 17.5″W x 26″D
  • 20″W x 26″D x 24″H:  Door: 16.5″W x 20.5″H / Tray: 11.5″W x 24″D
  • 26″W x 24″D x 24″H:  Door: 22.5″W x 20.5″H / Tray: 17.5″W x 22″D
  • 30″W x 24″D x 24″H:  Door: 26.5″W x 20.5″H / Tray: 21.5″W x 22″D
  • 36″W x 24″D x 24″H:  Door: 32.5″W x 20.5″H / Tray: 27.5″W x 22″D
  • 28″W x 30″D x 26″H:  Door: 24.5″W x 22.5″H / Tray: 19.5″W x 28″D
  • 28″W x 32″D x 28″H:  Door: 24.5″W x 24.5″H / Tray: 19.5″W x 30″D
  • 34″W x 34″D x 32″H:  Door: 30.5″W x 28.5″H / Tray: 25.5″W x 32″D
  • 40″W x 36″D x 32″H:  Door: 36.5″W x 28.5″H / Tray: 31.5″W x 34″D
  • 40″W x 32″D x 36″H:  Door: 36.5″W x 32.5″H / Tray: 31.5″W x 30″D
  • 38″W x 40″D x 36″H:  Door: 34.5″W x 32.5″H / Tray: 29.5″W x 38″D
  • 38″W x 48″D x 36″H:  Door: 34.5″W x 32.5″H / Tray: 29.5″W x 46″D
  • 40″W x 36″D x 38″H:  Door: 36.5″W x 34.5″H / Tray: 31.5″W x 34″D
  • 38″W x 62″D x 44″H:  Door: 34.5″W x 40.5″H / Tray: 29.5″W x 60″D

*Door opening height is measured from the slide out tray to the top of the storage box.

ATB Generator Box Side Open Spec Sheets:

Other Generator Box Options:

  • For more options see other generator enclosure options.

Additional information

TYPE

Aluminum
Dimensions

20"x26"x24", 24"x24"x22", 26"x24"x24", 26"x28"x24", 28"x30"x26", 28"x32"x28", 30"x24"x24", 34"x34"x32", 36"x24"x24", 38"x40"x36", 38"x48"x36", 38"x62"x44", 40"x32"x36", 40"x36"x32", 40"x36"x38"

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Frequently Asked Questions

Measure your generator's length, width, and height, then select the next size up from our range — 20"x26"x24" through 40"x36"x38". Account for the mandatory 5-inch available on the full face of the intake and exhaust grills for proper airflow. Contact Tank Vault before ordering and we'll cross-reference your generator model against our size options to confirm fitment. A box that's too small restricts cooling and risks overheating your generator under load.
The ATB box is designed for top-mount or side-mount installation on trucks and trailers. A mounting kit is available as an optional add-on — it is not included with the base box. Verify your mounting surface dimensions and hardware compatibility before ordering. If you're unsure about fitment on your specific vehicle or trailer configuration, reach out to us with your make, model, and mounting location and we'll confirm compatibility before the order ships.
The base ATB generator storage box does not include a mounting kit. The mounting kit is a separate optional add-on. The box ships with the stainless steel latch hardware, drawer slide mechanism, and intake and exhaust grills installed. If you need a complete bolt-on installation, add the mounting kit to your order or source hardware that matches your specific truck or trailer mounting points.
Lead times vary by size and current inventory. Standard sizes typically ship within a few business days, while less common configurations may require additional time. Contact Tank Vault with your required dimensions and delivery deadline and we'll confirm availability before you order. We coordinate LTL freight nationwide and can work with your job site schedule — let us know your timeline upfront so we can hit it.
Same product — plus we help you select the correct size for your generator and mounting application before the order ships. We cross-reference your dimensions, confirm the 5-inch grill available requirement, and coordinate LTL freight to your site. If you order direct and guess wrong on size, you're handling the return freight yourself. We verify fitment upfront so the box that arrives is the one that works.
The stainless steel front intake grill is an optional add-on, not a standard inclusion. The base box ships with intake and exhaust grills on the left, right, and back panels. If your generator requires additional front-facing airflow — or if your mounting orientation restricts side or rear ventilation — add the front grill to your order. Contact us with your generator specs and mounting position and we'll advise on whether the front grill is necessary for your setup.
SKU: A-GB52-222424L-S Categories: , Brand:

The Tank Vault Promise

What you order is what ships. No surprises.

Spec-Verified Before Ship We confirm your selected dimensions and configuration match your generator requirements before processing.
Free Shipping to Your Site LTL freight coordinated to your job site, yard, or facility — no minimum order threshold.
30-Day Hassle-Free Returns Uninstalled, original packaging — if it doesn't meet your spec sheet or arrives damaged, we resolve it immediately.

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