Here are pics of my screen door mod. All that's needed is a 3/8" ID grommet and a piece of 3/8"dowel.
This is a pic of the outside of the sliding panel.
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This is a pic of the inside. I added a 'paddle' to the dowel on the inside to make it easier to open. Just lift up on the paddle and the latch is released.
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The mod does not interfere with the sliding panel.[/img]