I have a 2000 c280 (w202) and I want to install some chrome rings around my gauges, but this requires me to have access to the area directly behind the cluster window.

I know how to remove the cluster (although I haven't done it yet) and I know the gauge cluster can be separated from the housing that includes the window.

My question is, how do I separate the window from the housing? Is it clipped on? Pressed on? Glued on?

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2000 c280 Sport (looks like an upgrade, feels like a downgrade)
1991 190e 2.3 (sold)