1.  Remove the upper and lower bolts. 

     (The grizzly bars are saddled on the frame and will not fall off) 

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2.  Using the welded center bar as reference, slide the grizzly bars to                     the desired opening, removing or adding bars as required. Count the

     holes between each bar, top and bottom, to ensure even spacing.

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3.  Replace the bolts top and bottom, tighten securely and continue screening.