I'm looking to get another one (My car never came with one) but I can't find exactly what its called to shop for one. Its the guy that wedges inbetween the two plastic pieces in the trunk to seperate the deep well and the hump.

 

rear compartment liftgate window close out panel

 

Inner door for the trunk monkey ?

 

yes, that's it........... here's the specs
http://www.trunkmonkeyad.com/