Toolbox Mounting Brackets Steel, for 18x18in Boxes

Secure your storage solution with these Underbody Tool Cabinet Mounting Brackets. Specifically engineered to support heavy-duty underbody storage, these brackets provide the structural foundation needed to keep your gear safe over thousands of miles. This set includes both the driver side and passenger side brackets, allowing for a balanced, professional-grade installation of your 18" deep by 18" high toolboxes on any flatbed, step-deck, or vocational trailer.

High-Strength Aluminum: The Underbody Tool Cabinet Mounting Brackets Advantage

These Underbody Tool Cabinet Mounting Brackets are manufactured from premium-grade, lightweight aluminum. Unlike traditional steel brackets that are prone to rust and "bleeding" onto your trailer frame, these aluminum supports offer natural corrosion protection and significant weight savings. Designed for a precise fit with standard 18" D x 18" H underbody cabinets, these brackets ensure your storage unit stays perfectly level and secure on both sides of the chassis.

As we continue to build the largest inventory of commercial truck parts in Illinois, we prioritize mounting hardware that withstands extreme road vibration. Featuring a heavy-duty C-channel design, these 18" x 18" brackets maximize surface contact with the trailer frame, distributing the weight of the loaded cabinet evenly. Whether you are hauling heavy chains or straps, these brackets provide the rigid support necessary to prevent cabinet "sag" or weld fatigue.