Sounds like one of the fillers on the frame that are installed as part of the PDI to keep air flow correct in the cabin ( keeps out dust ).
Your picture shows nothing
look at picture here is this it?
http://www.ridgelineownersclub.com/forums/showpost.php?p=115654&postcount=6
Your picture shows nothing
look at picture here is this it?
http://www.ridgelineownersclub.com/forums/showpost.php?p=115654&postcount=6