American Truckboxes - Manufacturer of Toolboxes
Semi Truck and Trailer Boxes and Toolboxes

Semi Truck Toolbox (Heavy Duty)

Step Toolboxes

Step Tool Boxes
Step Toolbox - ASB10 Series
Aluminum in 12" to 48" widths

Step Toolboxes
Inside view of Step Toolbox
Underbody Step Box
Underbody Step Box
Truck Frame Step Box
Truck Frame Step Box
Truck Frame Step Box
Truck Frame Step Box

Please call 1-888-996-0376 or
e-mail us for pricing and available sizes.
Online ordering is available at

This super heavy duty step tool box for semi trucks comes with a smooth aluminum body and bright smooth or diamond plate finish drop open door with a t-handle locking system. Our semi step boxes are designed heavy duty with heavy marine-grade aluminum (thicker than most standard brands), concealed rain gutters and high quality components.

The stepping surfaces are also heavy duty, making climbing to the back of your truck safe and easy. The unique storage container between the steps can be used to store chains, binders, straps or even trucking gear. The step box has gusseted corners and a reinforced back for mounting to the semi truck frame, where it is mounted between the fuel tank and the rear tires.

The step box can be mounted with a hook (no drill system) or with the bolt-on mounting kit.

Reference Documents:


Step Toolbox Mounted on Truck
Step toolbox shown mounted on truck
Step Box Mounted on Pickup
Step toolbox shown mounted behind pickup cab
Step Toolboxes Custom Made
Here is an example of a 36" side step toolbox.

Need a custom-designed or custom-sized semi truck box? Contact us!!


American Truckboxes

American Truckboxes, LLC®

American Truckboxes, LLC
15750 6th Street SE
Blanchard, ND 58009
Toll-free: 1-888-996-0376
Phone: (701) 636-0376
Fax: (701) 636-0380
Office Hours (CST):
Monday through Friday
8:00 to 12:00 noon
1:00 to 5:00 p.m.
Sales Department:
General and Technical Information:
Spare Parts Department:
Technical Support Department:


We accept Visa, Mastercard, American Express and Discover
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