Is the black plastic ventilated grill in the very back of the trunk to aid or assist in ventilating the interior of the car? My car is a 05 Limited Coupe. That is my assumption but I would like more information than an assumption. I've searched on this site but have been unable to find anything. I discovered this grill while putting some sound insulation in the trunk under the carpet. I'm also wondering if this grill work could be letting a lot of road noise into the back of the car. Just a thought. Any ideas?

Thanks

Jim