Mounting bunk boards using double U-bolt bolster brackets provides the most rigid bolt-on bracket mounting possible. Made from heavy 7 ga galvanized steel, these brackets are 4” wide with slots that are 1/2” wide spaced 1-3/4” apart with a top hole diameter of 1/2”.
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![C.E. Smith Double U-Bolt Bolster Bracket - 8-3/4" [10190G40]](http://www.essentialmarineservices.com/cdn/shop/files/73893XL.jpg?v=1702434878&width=1445)