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Step 1
Use a marker to mark where the holes should go.
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Step 2
Using a drill, make holes where you made your marks.
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Step 3
Insert the provided screws and place the waterproof washer on the opposite side of the tab. Then place the topper on your mailbox.
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Steps 4
Place the lock washer on the bolt on the inside of the mailbox and then the wing nut after that. Tighten the washer and you are good to go!