WHY AN HPI™ Side Open Semi Box
It’s all about the structure
Doors that never fail
Premium Materials
Choose from different finishes
Versatile use boxes
Built to Last Forever
Angle braces, Corner Gussets, Bottom Face Stiffeners. Highway Products Boxes are completely reinforced to prevent the torsional forces that causes welds to crack and boxes to fail. The Structure is the secret to our Million Mile Boxes

¼” SS Hinges w/ 3/8” knuckle secured by Torx Screws. SS T-Handles with 3/8 locking rods.

1/8” 5052 Aluminum – Marine Grade Aluminum

Upgrade from Smooth Aluminum to Polished Stainless Steel Doors, or even Powdercoat your boxes for a unique look

Perfect to mount under bodies, or use for a variety of applications (show flat bed and other weird location for box)
Everything build at Highway Products gets our Lifetime Guarantee