Can anyone identify where (or if) this styrofoam damper insert goes in my 1999 GP GT (4-door)?

It has part # 10257786

I know it doesn't go in the rear doors. I have replaced all 4 window regulators in this car so it could be from the front doors but I don't want to open up the panel to find out.

iCloud Photos - Apple iCloud
iCloud Photos - Apple iCloud
iCloud Photos - Apple iCloud