Each side is different in shape, and I also paid more for one side. I replaced both earlier this year as they had cracked in the middle. I am not sure what kind of adhesive/glue MB used, but it was so strong, the only way to get the panels off was to break them and remove it in pieces. I tried various adhesive removers in an attempt to soften it, but was unsuccessful. The glue is a flexible black rubber composite and has 2 to 3 different contact points per panel. Perhaps someone can better provide a solution of removing them with ease. Good luck.

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Steve32