We had a pergola and bolted the panels down directly to metal strips that was installed (on one of the pictures you can see it a little bit). Then the guy who made the racking bolts made a long strip to make the panels water tight (look at the first picture very bottom they are power coded black to match the panels). I still have to put some silicon on them but its water resistant not proof yet.
BioTech
BioTech
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