Apple iMac G5, 20-inch - Manual (Page 185)

iMac G5 (20-inch) Take Apart - Front Bezel
Removing the Front Bezel
With all preliminary steps performed, the front bezel is the part that remains.
Note: A diecut piece of microfoam is included with all replacement optical drives and front
bezels. Install the shim between the disc drive and the front bezel to prevent optical media
from ejecting out of the system and dropping to the desktop. Only one piece of microfoam
should be used per system. Refer to the replacement procedure for the front bezel for
more information.