Hot answers tagged patching-drywall
Since you want to have the drywall piece be 5" high I think you will want to have backer behind it for its full height. Consider making it 5.5" high and then using a piece of 2x6 lumber (that comes 5.5 inches wide) as the backer piece. Cut a couple of pieces to straddle across the bottom of this opening at the back and middle to hold up the shelf the full ...
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