Fourteen magnets hold the front glass panel in place. Our suction cups were very handy for this operation.

The glass panel comes off with a gentle pull straight up.

The suction cups made removing the glass surprisingly painless. However, getting dust or fingerprints on either the glass or LCD is a concern. You must make sure both the LCD panel and glass are completely clean prior to reassembly.

The rear of the glass has a metallic bezel, as well as seven alignment posts. The magnets that help hold the glass in place are in the iMac's aluminum front bezel.