A-SF51S - 21"H x 30"D x 30"W - Aluminum Semi Truck Step Frame Toolbox, Smooth Body, Diamond TP Drop Open Door, DT-T-Handle Lock and Laser Cut Strut Pressed Grip Steps.

Step Boxes are Heavy Duty Trucker Grade for Premium Buyers. Boxes have Superior Track record for Longevity Grade and remaining Water-Tight and Theft-Resistant. 

Dolphin Tail SS-T-Handle Lock Provides Superior Break-In Protection.

Made in the USA - Most Superior Boxes on the Market Today - Compare Material Thickness for it will tell you a lot!

Step Boxes come with Durable Heavy Duty 10g Steps with Grips and with front door for easy excess to tools and straps. 

 The Step Box comes with 1/4” sides for mounting to Semi-Truck Frame and is mounted between the Fuel Tank and the Rear Tires.

 Step Boxes come in various sizes, styles, materials & finishes.

Boxes are available in durable aluminum diamond tread and smooth finish.

Mounting Kit Use:

For Hook System Mounting Kit up to 150lbs, purchase: Part Number M3000H

For Bolt-On Mounting Kit up to 150lbs, purchase:          Part Number M3000C