I used six 8" pieces of ½" aluminum Unistrut -one for each foot on the panel. I put done a 12"x4" piece of Dicor tape under each, then centered the channel, and attached each with three stainless screws. The underside of each Unistrut was coated in Dicor, as was the secured screw head.
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2014 RAM Laramie 2500 w/6.7L Cummins Diesel and Automated Safety Hitch
2016 377RLBH Jayco North Point
300W of Suntech Solar w/Rogue MPPT Controller & Xantrex 2000W PSW Inverter