Beefy Heavy Duty Steel Poly Truck Box Mounting Brackets Pair 15 By 14 Inch Black A36 C Channel Support Fit 24 And 36 Inch Dump Beds Upgrade Your Rig With Dang Solid Underbody Braces That Grip The Frame

Heavy Steel Bracket Pair For Underbody Poly Tool Boxes
✔️ A36 Steel Construction Measures 15X14 Inches For Bed Mounts

This pair of reinforced mounting brackets secures your poly toolbox to dump beds, flatbeds, and utility rigs. Drivers rely on them to eliminate rattle and keep tools locked down during daily hauls.

✅ Built from solid A-36 steel for maximum load bearing capacity
✅ 2 inch C channel frame locks inside toolbox ribs for stability
✅ Pre drilled 7/16 inch holes allow quick bolt on secure mount
✅ Black powder coat shields against rust and road salt damage

💡 What size steel supports do dump beds require for heavy toolboxes?
A reliable setup starts with reinforced frames that handle road vibration.
- Standard setups call for welded braces that span the full bed width to tackle impact loads without sagging.
- Using ready made mounting plates makes the job super handy and cuts down on custom fab work.
- Hardened powder coatings keep underbody hardware tight and stop early wear on daily runs.

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