If you use a package, you will find that the clamps that keep the solar panel into the framing will match, and many slide right down to lock the panels in place with the simple-to-access bolt that chinches the clamp to the panel. California's Enphase Energy is for the forefront https://bangkok-wax50481.livebloggs.com/42077970/rumored-buzz-on-solar-cell-system-for-home