Place the plastic opening tool in the seam between the outer casing and the screen.

Run the plastic opening tool along the seam to disconnect the tabs attaching the panel to the outer casing until the panel moves freely.

While you run the plastic opening tool along the edge, several tabs will pop out.

It is normal for the tabs to make a loud click when released. The corner tabs will be harder to release than the others and will make a louder click when released.