Cbb129

I'm replacing the carpet in my new to me 2011 E350 Cabriolet. I've found and ordered the two front seat modules, but can't find the rear anywhere. I called Auto Parts Nation, and the guy gave me a part # 207-680-06-41-8P20. I've found it on a few sites, but it's not specific to the convertible. Anyone have any ideas where to get new rear carpet module in beige for my car ? Thanks in advance.