What's size of the screws should I use for Motorhome roof to mount the solar panel
Hello everyone,
Any one know the size of the screws that I can use for the Thor Motorhome roof to mount the solar panel brackets? I don't know how thick the roof of the motorhome, and don't want use the screw too long to drive through the roof, also don't want use screws too short and can't holding down the panel well.
Thanks.
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