These rail fittings are the cats meow. They are a two piece SS clamp that fits over a 1" piece of SS tubing. They are also available to fit 7/8" tube. Clamp them over the rail and attach them to the panel deck hinges previously mounted to the panel as shown. Once everything is adjusted and aligned tighten the clamp set screw.
If you click on the photo to make it larger you can see the details of the split rail clamp a little better.
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