New BEHR radiator question

[300sd2000]

Just bought a new radiator from you (BEHR) for W126 300SD. Question: there's a white button like piece on the radiator grill...is it there for a reason (certainly my old car didn't have anything there). If its supposed to be removed, do you just pull it out. I appreciate a fast reply on this if possible as Im installing it this morning. I'm pretty sure its probably just put in for shipping purposes or something.

Thanks in advance.